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Item#: N82E16819117231

Intel Xeon X5650 Westmere 2.66GHz 12MB L3 Cache LGA 1366 95W BX80614X5650 Server Processor

  • 32 nm Westmere
  • 12MB L3 Cache
  • 95W

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  • Warranty & Returns
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The six-core, twelve-thread Xeon X5650 processor, with advanced features like ECC memory support, Trusted Execution Technology and Virtualization Technology, is built to handle the ever-changing demands of a virtualized and consolidated computing environment.

Important Warranty Information

This product is end-of-sale and no longer warranted by the manufacturer. Instead, Newegg warranties this product for one year from date of purchase. If you require warranty service after thirty days, please contact Newegg Customer Service, not the manufacturer.

  • newegg ECC Memory Support With the integrated DDR3 memory controller, the Intel Xeon X5650 processor enables three channels of ECC DDR3 memory, resulting in up to 32GB/sec memory bandwidth.
  • newegg Intel Virtualization Technology (VT-x) Increasing manageability, security, and flexibility in IT environments, virtualization technologies like hardware-assisted Intel Virtualization Technology (Intel VT) combined with software-based virtualization solutions provide maximum system utilization by consolidating multiple environments into a single server or PC. By abstracting the software away from the underlying hardware, a world of new usage models opens up that reduce costs, increase management efficiency, strengthen security, while making your computing infrastructure more resilient in the event of a disaster.
  • newegg Intel Trusted Execution Technology Intel Trusted Execution Technology for safer computing is a versatile set of hardware extensions to Intel processors and chipsets that enhance the digital office platform with security capabilities such as measured launch and protected execution. Intel Trusted Execution Technology provides hardware-based mechanisms that help protect against software-based attacks and protects the confidentiality and integrity of data stored or created on the client PC. It does this by enabling an environment where applications can run within their own space, protected from all other software on the system. These capabilities provide the protection mechanisms, rooted in hardware, that are necessary to provide trust in the application's execution environment. In turn, this can help to protect vital data and processes from being compromised by malicious software running on the platform.
  • newegg Intel 64 Intel 64 architecture delivers 64-bit computing on server, workstation, desktop and mobile platforms when combined with supporting software. Intel 64 architecture improves performance by allowing systems to address more than 4 GB of both virtual and physical memory.
  • newegg Intel Turbo Boost Technology Intel Turbo Boost technology automatically allows processor cores to run faster than the base operating frequency if it's operating below power, current, and temperature specification limits, maximizing speed for demanding applications, dynamically accelerating performance to match your workload-more performance when you need it the most.
  • newegg Execute Disable Bit (EDB) Intel's Execute Disable Bit function can prevent certain classes of malicious "buffer overflow" attacks when combined with a supporting operating system. Execute Disable Bit allows the processor to classify areas in memory where application code can execute and where it cannot. When a malicious worm attempts to insert code in the buffer, the processor disables code execution, preventing damage or worm propagation.

Learn more about Xeon X5650

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of Xeon X5650

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  • Cheryl L.
  • 6/6/2014 1:16:27 PM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsStill Incredible Years Later!

Pros: One of the last overclocking Xeons, in 6C/12T dress, a healthy 12MB L3 Cache, and incredibly flexible: single chip, 2P server/WS, and the legendary SR-2 if you want to have fun. Oh, and ECC/REG or standard DDR3.
Both overclock to 4.54Ghz in my SR-2 with Swiftech Apogee HD blocks and the (most incredibly well built) MIPS full coverage SR-2 motherboard block setup. That's with the full 48GB of DDR3, which is running at a very impressive DDR3-2096 6-9-7, 3x EVGA GTX780Ti Kingpins (full coverage blocks and backplates) at 1522/8200, Titanium HD, Intel 2x10Gbit hardware NIC, Areca 1882xi-16i (4GB Cache/battery+NAND backup), hardware PCIe 2.1 x4 to 4+8 External/Internal-header USB3.0, 2x DC S3700 800GB RAID0, 4x Samsung EVO 1TB RAID0, 4x 1TB VR RAID10, 6x 4TB HGST Ultrastar SAS RAID6, and to make sure that the beast can eat, a pair of EVGA 1300WG2 fully-modular PSU's with fully custom made and sleeved cables (a gauge lower/thicker, MDPC-X sleeve). It requires a 20A circuit to itself!

Now, that's a setup I threw together to do some ambient water benching (using a custom test bench instead of a case), cooled by 4x Phobya 1260 rads each with 18x 140mm 178cfm/11.9mmH2O fans push+pull and 2x MCP35X2 (four total pumps).
Normally, I use these chips in one of my servers, specifically for encoding tracks on the fly while in the middle of a recording session (audio production and mastering, I do music and also television/film). Since I record master tracks at extremely high resolution/bit-rate (48bit/384khz usually), the raw audio takes up a lot of space, and factor in the fact that there are (usually) anywhere from 4 (single vocalist) to 16 (2-4 band members, plus spatial and other mics) simultaneous streams, and the encoding can be pushing significantly more data than a "lossless" 1080p/DTS-HD Blu-Ray!

For a while, I was relying on a single machine to encode, but it is frustrating walking into the studio in the morning after a late session to record/mix for a single musician and the previous night's 16+ channel (3-4hr session) still hasn't finished... I ALWAYS work WITH the artist(s) for part of the mixing as I believe that their music should sound how they want, and I do as much as possible to do so, without decreasing the quality of the record, losing the dynamic range (I refuse to participate in the Loudness War, everything I've mastered has a dynamic range limited only by the medium, whether Redbook or DVD-A+ 24/96-192.
I had used these chips first for the workstation, and then for some competitive benching which they survived without requiring so much as a voltage bump, and now they're the hearts of the second encoding rig I built (currently have 4; a 4x12C/24T, a 2x6C/12T, and 2 4x8C/16T, and with the half-dozen minimum different medium for distro, even a single record can utilize all four simultaneously).

Cons: The 95W TDP, while understandable, limits these chips along with the multiplier, and the 5680's I have are significantly faster (5Ghz easy).
I went through a few trying to find a pair of chips that BOTH worked with all the DIMMs populated on the SuperMicro boards I use for pro work (the 48gigs of the SR-2 is comparatively easy to handle), as even 192GB can be whittled down surprisingly fast, especially when using one or more RAMdisks to cache or buffer writes to any of the HDD arrays that aren't using SSD(s) alongside the 1-4GB RAM courtesy of the Areca/etc controllers.
If you are overclocking, the better your RAM, the better the results in my experience, in particular for benching. The G.Skill Pi's I have rated DDR3-2200 7-9-7 provide a lot more flexibility and for some benches, points, than 1600 6-7-6. The catch is that the currently produced DDR3 "enthusiast" kits are not very well suited for these chips, either; IVB/SB-E/HW/IV-E all benefit from very high frequency, but the on-die IMC and insanely fast L3 cache of the newer architecture have greatly reduced the benefits of the super tight timings we see in kits from just a few years ago, when Nehalem was king and the timings greatly impacted latencies. Thus, even a top quality current kit such as Trident X 2400 9-11-11/2666 10-12-12 or Ripjaws Z 2400 9-11-9 (GSkill provides significantly better IC's in their kits than equivalent priced Corsair, and to get similar yet still usually lesser quality from the latter you will spend 150 to 300 more!), can't get the tight timings these Xeons love.
Retail is too high considering the advances made since their intro, and I got mine out of servers being sold locally (privately), which for the same amount netted me two pair of these and four X5680, 384GB ECC DDR3 total, 1/ea H700, H800, and 9286 RAID cards, two dozen 150-450GB SAS 15Krpm drives, 2 brand new X25M-E SLC 80gig, a K4000, a FirePro W9000, two 6-tuner capture cards, a box of high end Sanyo Denkei and Delta fans, a couple "playback" video cards (5770, 4670, GTS450, half a dozen HH 4xxx series low end for HDMI)...
Just be patient and attentive!

Other Thoughts: It is a testament to the performance, design, and functionality that you get from Intel when a processor released a few years back for a few-years-dead platform is outperformed only by its successor. These CPU's can be found all over, and with a bit of patience and knowledge, it's actually incredibly easy to match a pair of these 6core/12thread Xeons (or even the faster models) with a full fledged SSI CEB 2P board from SuperMicro or the like, quite likely with 24-96GB DDR3-1333/1600REG-ECC, for less than what I spent on my 3930K, and do the same with the top model of the line for less than my 3970X or 4960X.
Why "settle" for an APU or E3/i5 based home server when you can do AMD's "Moar Coarz", but do it right?
Sure, it's overkill for an HTPC or (my favorite) your favorite flavor of "Giant Box'O'RAID" storage server, but if you are shopping for a high end processor in the first place, you are probably a fellow member of the "Overkill or No-kill" club.

If you are looking for processors for running a number of VM's, or "grown up RAID" (ie not a pointless 2x128GB SSD RAID0, but hardware, onboard caching, battery and ideally NAND backed arrays), then with very few exceptions, 12 cores (24 threads) is ideal for home use, and will provide a fair amount of room to grow arrays for example (I started with 8x 15Krpm HDD + 2x SSD, and in this one machine currently have 3 separate 8x3TB RAID6E arrays (9total drives per array), 2x DC S3700 800GB SSD RAID0 as a write and current-project cache for all parity arrays, 8x 600GB 15Krpm in RAID0 for temp storage, 2x X25M-E RAID0 scratch array, 4 4x4TB WD RE SAS in RAID10, and the motherboard ports hold the 2x M4 128GB RAID0 OS array (OP'ed 40pct), and the rest are filled with misc 1-3TB HDD as single drives).
Running bi-directional 10GbEth via Intel HW NIC, even stressing every single storage device, simultaneously reading and writing at about 1.2GB/sec, I run out of bandwidth before the processors even break 20 percent in use.

Bottom line: The most economical way to get awesome trapped in a silicon wafer, and every one of the 6 cores is a REAL, FULL CORE with the addition of HT, unlike the 4/6/8/12/16 "core" chips from the other guy, that are 2/3/4/6/8 CORE chips with a variation of HT semi integrated into a small part of the hardware, that lures fanboys out in droves to douse the Internet in a bath of fire from their flamewars.

2 out of 3 people found this review helpful. Did you? Yes No

  • Konstantin K.
  • 4/20/2012 11:52:06 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month

5 out of 5 eggswow

Pros: It’s amazing CPU. Just wow!!!

Cons: I’ve got this CPU with a purchase of used Dell Precision T7500 in a dual CPU configuration. With HT enabled Win 7x64 reports 24 CPU cores. I run simultaneous conversion of ten AVI to MP4 video files. Each file is about 13 GB in size and this process was completed in less than 30 minutes. CPU usage never went over 30%. It’s amazing. I run a single file conversion on another machine with a dual core non-Intel CPU and it took hours and CPU was at 100%.

Other Thoughts: Dell T7500 w/ 2 x Xeon X5650
2 x 300GB SAS 15000 RPM HDDs RAID 0
2 x 160GB SATA HDDs
Fanless ATI Video card
At the kicker price of less than 2 CPUs

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  • Joshua V.
  • 10/16/2011 3:48:10 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: It works? It's a processor folks, so there isn't too much to say. It's ideally suited for those dual-socket boards, but would be overpriced if your mobo only has one socket.

Cons: Does not come with a heatsink, so budget in some more money for that.

1 out of 2 people found this review helpful. Did you? Yes No

  • 2/10/2011 12:39:31 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsNo heatsink or fan

Pros: It came on time as promised, but my motherboard is a day behind for some reason, from the rest of my purchase. I won't be able to build my system until tomorrow, but they got everything here on time basically, as promised. I ordered late Saturday night, it shipped out Tuesday, and got here on Thursday. I would like to note that Friday shipment is still within their promised service time frame, so no complaints on that end, even if it is at the far end.

Cons: It does not come with a heatsink or fan. If I had known that, I might have chosen other options. Now I will have to look locally for an option, or possibly even send it back. Shame on them for not telling. The package came in apparently good condition.

Other Thoughts: If a processor is going to be shipped without a cooling system, then it should plainly say so on the page. I do not see this fact mentioned anywhere, and did not know it until I got the product. It needs to be clearly stated! The product got 5 stars.

2 out of 6 people found this review helpful. Did you? Yes No

  • Jay B.
  • 12/16/2010 6:47:23 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: Fast and will take a good overclock with the proper cooling

Cons: overpriced for what you get

0 out of 1 people found this review helpful. Did you? Yes No

  • Ronald R.
  • 10/18/2010 4:41:11 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsGood CPU

Pros: Arrived quickly, excellent performance.

Cons: I would not purchase this again from this vendor. I would like to express why but the moderators feel you shouldn't know the whole story.

5 out of 20 people found this review helpful. Did you? Yes No

  • Alexander P.
  • 10/18/2010 1:21:51 PM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsThis is shipping protection?

Pros: We'll see.

Cons: Came with both Xeon boxes simply stuffed in a bubble envelope. When I opened the envelope, both boxes looked like a fat lady sat on them. Have pictures.

Other Thoughts: We'll see when I do the build whether they work.

3 out of 13 people found this review helpful. Did you? Yes No

  • Guy M.
  • 9/19/2010 3:31:33 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month

5 out of 5 eggsThe Best Choice for SR-2

Pros: The Xeon X5650 hits the sweet spot in Intel's new Hexa-core line-up, and indeed the entire enthusiast market. It is not too expensive compared to its competition and features a multiplier high enough for overclocking well to the maximum of any good Watercooling setup.
It's the 32nm brother of the 45nm i7 Desktop line, known as 'Nehalem'. This means it runs cooler, overclocks better, and takes the 50% increase in size with comfort. In fact, it offers better overclocking than its 45nm Quad-core counterparts.
What else can you ask for except for a lower price point?

Cons: Needless to say, if you're not overclocking, you're either setting up a server or you've picked the wrong CPU.
I want to also point out that Intel's next architecture - 'Sandy Bridge' might just make it here sooner than the projected fall '11 time period, which would be refreshing since we've had the same architecture for the past two years.
Most importantly, while the X5650 is a great value in comparison to what is currently available in today's market.. it is extremely pricey if you take into account the recent few years and the projected future. You see, the reason Intel prices its Hexa-core processors so high, is because it can, which is to say, it has no competition from its only rival AMD, in terms of performance.
So yes, this is very over-priced, but why does that matter when you can sell it in up to a year from now at around the same price (most likely)?

Other Thoughts: For SR-2 buyers, you can expect to reach 4400Mhz easily on a decent Watercooling setup.
I don't advise on buying the X5660, X5670 or X5680 unless you're benchmarking with LN2.
And if you're here because you want this chip but can't afford it - I recommend the E5620 on SR-2 or i7-930 on X58.
Lastly, think of what you'll be using it for. It will be overkill for almost anything out there. Personally, I do Gigapixel Photography, so it's almost necessary for my work.

18 out of 18 people found this review helpful. Did you? Yes No

  • Allan H.
  • 9/14/2010 11:55:31 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsScotty I don't need more power...

Pros: So far i have not streesed the two x5650s that I have installed on my Classified SR-2 MB and therefore I have not overclocked them yet. But I'll review when I do. For now I think I've future-proofed my PC - at least for a little while... These two processors really scream! Installation was a breeze and BIOS and windows recognized what it should. I have two H70s cooling them and they are idling at around 32c.

Cons: I may have some issues when I attempt to overclock, but for now I have none.

2 out of 6 people found this review helpful. Did you? Yes No

  • Richard K.
  • 9/5/2010 4:58:38 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsLove this CPU

Pros: - 6 cores / 12 threads
- 12MB L3 cache and Westmere make for a very powerful compute platform
- 95W TDP vs. 130W for the slightly faster and much more expensive alternatives (unless you go with the Lxxxx version, which is slower, but uses less power)
- A big advantage of the Xeons compared to the desktop Core i7 line is that they support ECC RAM

Cons: None

Other Thoughts: Worked great from the start; no glitches. It comes without a heatsink; I'm using a Noctua NH-U9DX with push/pull fans, and temps are in the low 50C range under full load.

I'm using a single CPU on an EVGA SR-2 motherboard. For WCG crunching, I'm getting about 32000 ppd at stock clocks.

1 out of 1 people found this review helpful. Did you? Yes No

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