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Patriot Viper Steel 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 4400 (PC4 35200) Intel XMP 2.0 Desktop Memory Model PVS416G440C9K

Ships from United States.

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  • DDR4 4400 (PC4 35200)
  • Timing 19-19-19-39
  • CAS Latency 19
  • Voltage 1.45V

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the Patriot Memory PVS416G440C9K

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): Lifetime
  • Limited Warranty period (labor): Lifetime
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Ownership: 1 month to 1 year
Verified Owner
5/ 5
Good memory for a Asus Strix-E Ryzen 3800X build 5/21/2020 5:13:53 PM

Pros: -Clocked down to 3733 with tight timings
-Pretty good price for a B-die kit at the time, but overall the price was just ok.
-Looks good and no RGB ( a plus for me)
-Newegg got it here fast

Cons: -Heat spreaders are a little thin compared to other products, but I don't think it affected cooling.
-Price tended to be all over the place before buying, so make sure you get it during a low.
-Seems to be luck of the draw for how well you can adjust timings.

Overall Review: Overall, I am pleased with my first purchase of Patriot memory and this kit in particular. I used Ryzen DRAM Calculator to achieve my best results. The RDC gave me baseline values and I tweaked from there. My best timings were 14-14-14-28-42 @3733. The tRFC value was 308 and voltage was somewhere between 1.43-1.45, if I remember correctly. Those timings led to my best score for the RDC's built-in MEMbench........108.93. My bench testing beyond that was limited to Heaven and Timespy. I never experienced any crashes while gaming and that was all I cared about anyway. I would purchase again and I am leaning toward using this in a build for my wife. Outside of benchmarks, some of the benchmark scores seem to be splitting hairs to me. This was one of three kits that I tested and my Crucial Rev E 3600 kit did pretty good too, ran a little bit cheaper, but it's timings had to be slightly looser.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works fine w XMP at measured 4392mhz (spec'ed at 4394) passed Memtest86 with 0 errors on X570 AORUS ULTRA w Ryzen 9 3900 5/20/2020 2:16:50 PM

Pros: Great price
Easy install
No RGB lights because it's a computer not a DJ booth.

Cons: 1st pair was defective, one module did not work at all, other module started to fail within a few days. If you don't see it fully recognized in your BIOS w the latest firmware, I'd send it back.

Overall Review: X570 AORUS ULTRA w Ryzen 9 3900

After a week or so, I ran the standard MemTest86 and had zero errors with the XMP settings.

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Ownership: 1 week to 1 month
Verified Owner
1/ 5
Unstable headache 5/15/2020 11:38:13 AM

Overall Review: This memory has been a headache and I'm suffering buyers remorse for the first time in 20+ years of PC building. Every time I think I have this memory stable, it works for a period of time, and then becomes unstable again. For starters, it does not work at advertised speeds out of the box. It's default is 2133 MHz. To get anything higher than that you have to manually overclock because XMP profiles cause the system to completely refuse to boot, requiring a BIOS reset to revert it back. I manually overclocked the RAM using specs another reviewer had left, and it was stable for about a week before just spontaneously becoming unstable again. I went from zero crashes, to a crash every couple of hours. Changing the OC settings made it stable for another couple of day, and then more crashes. Today, I expected my PC to boot since it worked fine all day yesterday, but like has happened time and time again, the RAM decided it's not going to boot today with the settings that WERE working before. Back into the BIOS I go, to set it to the settings that it refused to boot with last week, and lo-and-behold it boots just fine. I've never had so much trouble with RAM before and am extremely disappointed with this purchase.

0 out of 3 people found this review helpful. Did you?
Manufacturer Response:
Hello David,

Based on what you're describing, we suggest contacting the Technical Support department at Patriot Memory for assistance. They will be able to guide you through troubleshooting and replacement if needed. You can contact them at or 800-800-9600 opt. 2.

Patriot Memory Technical Support
Ownership: 1 day to 1 week
Verified Owner
5/ 5
Excellent RAM at a reasonable price 5/9/2020 6:50:29 AM

Pros: One of best RAM kits available for the price.
I bought this knowing it would either max out or exceed my 9900k memory controller ability, hence no point in buying more expensive higher speed RAM than 4400.

Cons: Many current cpu memory controllers (intel ie 9900k, ryzen) cant do 4400 yet so requires setting speed/timings yourself if your cpu did not win silicon lottery for memory controllers. Future cpus from intel (10900k and rzyen 4000) should have higher percentage that can run this at rated speed.

Overall Review: One of the best RAM kits for the price. My 9900k's cpu memory controller wont post at 4400, will bench only 4266, 4133 will run memtest stable but only at high 1.4 vccio/vccsa volts. But 4000 rock stable for 8 hours memtest with reasonable 1.27 vccio/vccsa.

Instead of stock 4400 19-19-19 at 1.45v, I was able to run 4000 17-17-17 and tight secondary timings with 1.4v dram, 1.27 vccio, 1.27 vccsa for 8 hours memtest stable. 4000 with tigher timings got nearly same aida64 speed with better latency vs 4266 C19 (secondary xmp setting).

I tuned my kit by booting 4400k XMP (failed), then 4266 (booted but failed memtest in seconds), then 4133 (failed memtest until incremently raised VCCSA/VCCSI to 1.4 which is too high for my taste for 24/7).
Settled on 4000 max for my cpu memory controller and then manually set volts to reasonable 24/7 of 1.4 dram, 1.27 vccio/vccsa. Then tightened primary timings to 18-18-18, ran memtest for 20mins, then to 17-17-17 passed. Tried 16-16-16 and 16-17-17 both failed. Then ran 17-17-17-37 which passed for 2 hours of memtest. Then booted at stock without xmp 2133 and wrote down all secondary timings and booted to xmp and wrote down all secondary timings. Then with 4000 set manually XMP off, voltage manually as above, was able to walk down secondary timings all close to or at 2133 level, left tertiary alone. Then memtest overnight 8 hours with 850% coverage no errors.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great RAM 5/8/2020 1:46:40 PM

Pros: Excellent RAM, underclocking with excellent tighter timings can be easily achieved.

Cons: Will require some tinkering to run faster than default base speeds, at least for Ryzen.

Overall Review: Got my set paired with a 3800x on MSI Unify running at 14-14-14-28-42 / 3600mhz 1.45v completely stable.

At first, mine would only run at 3200 14-14-14 ... it just required a bit of tinkering. Set in bios manually-> Soc @ 1.1v and Vddp/VDDG @ 1.0v, CR T1/FLCK 1800, Power Down Mode-disabled, Gear down disabled. all other timings set according to DRAM calculators 3600 Fast suggestions, as well as termination setting and DrvStr.

Very happy!

1 out of 2 people found this review helpful. Did you?
Ownership: 1 day to 1 week
Verified Owner
2/ 5
Does not perform as advertised 5/8/2020 12:04:08 PM

Pros: No RGB
Samsung b-die

Cons: Seems to be a heavy luck of the draw.
No way they reach the true advertised specs
The PCB was thicker than a set of Gskill i have and wouldn't actually fit in an ASUS board without some significant force.

Overall Review: I've tried and tried over 100 different profiles and timings with no luck even pushed 1.5 volts.
The best I could get from these is 3600 at 18-22-22 and I'm not happy at all. Both kits produce the same results. Hardware is MSI X570 Unify and 3900x. All overclocks were removed during manual timings. I will RMA these and see if i can get a new set if the new set is good then I'll update. But for now I'd advise spending a little extra on Gskill RAM and overclocking that.

1 out of 3 people found this review helpful. Did you?
Manufacturer Response:
Hello Harrison.

Sorry to hear about the issues you are having. Our Technical Support Team would be happy to troubleshoot your PVS416G440C9K and help raise your speeds above 3600MHz. Please contact them at or 800-800-9600 opt. 2.

Please note that the MSI X570 UNIFY and the Ryzen 9 3900x are not part of our QVL. The entire QVL list for PVS416G440C9K can be viewed online here:

Thank you for choosing Patriot Memory!

Patriot Memory Technical Support
Ownership: 1 month to 1 year
Verified Owner
4/ 5
Not so good overclockability 5/5/2020 10:41:22 AM

Pros: Not overpriced Samsung B die modules.

Cons: Weeker Overclocking as expected.

Overall Review: I purchased 5 of these kits to select the best one for Ryzen 5 3600X. I thought these are very good quality Samsung B -die modules, but they cannot even do Ryzen Dram Calculator’s fast preset at 3733MHz, only with extra high 1.5V voltage.

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Ownership: 1 day to 1 week
Verified Owner
5/ 5
Writing this review to hopefully save some headaches 4/12/2020 12:43:56 PM

Pros: Great ram. If you're on AMD and can't get over 3200mhz, it's probably not the memory at fault. See below.

Cons: Other brands like Corsair have an easy to find guide on setting their ram up for Ryzen. I found Patriots competitors guides to be helpful in this case.

Overall Review: Ryzen 3600
Asus Tuf Gaming x570

This was the most challenging experience with setting up DRAM I've ever had. I knew what I was getting into with non-qvl sticks but I was hoping I'd get lucky.

Default speed was 2133 mhz on setup - ok

Used the timing calculator to try and hit 4,000 - not a chance even at 1.5v. Also learned from forums that 3800mhz with tighter timings is preferable to 4400mhz

Found out DOCP = XMP. - couldn't break 3000mhz
Found out people with this board have had issues with memory speeds in the A0 B0 slots - switched and could hit 3400 mhz with errors in memtest86. Hopefully a bios update will fix.

Used Corsairs PDF for Ryzen memory and found out that 1T and gear down mode OFF can cause instability - and instability it did. 3800mhz on 2T with gear down mode ON no errors. Also used ProcODT of 48 as suggested by the guide.

Went for tighter timings like CAS latency 14 - No luck on 14. Final settings with 0 errors on a full memtest86 run are as follows:

Use the 1.45v XMP profile. Set to 3800mhz. FLCK auto (1800mhz). Now 15 15 15 15 34 50 for the first 6 settings. ProcODT - 48ohms, Cmd2T - 1T, Gear Down - Enabled. All others on auto.

18 out of 18 people found this review helpful. Did you?
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