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FirePower Technology, Inc. > 
Item#: 9SIA4H81E87031

FirePower ModXStream Pro 500W 80Plus Semi-Modular High Performance ATX PC Power Supply 500MXSP, formerly PC Power & Cooling

  • ATX12V V2.2 / EPS12V
  • 100 - 240 V
  • 80 PLUS Certified
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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The ModXStream from OCZ is the superlative solution for driving today's gaming systems. Professional-grade, designed with gamers and modders in mind, this PSU is stable, robust, and sports a sleek look and compact form factor.

The PSU is ready for your SLI or CrossFire configuration with 2 PCIe connections. There are also 6 SATA, 4 Molex and 2 Floppy connectors so you load your system as you please. A four rail configuration balances the power output for consistent performance.

Keeping it cool is a 135mm fan and an openwork grille on the back panel. With its 80 PLUS certification, less energy is wasted as heat or interference, delivering more power to your hungry system!

  • newegg ATX12V and EPS12V Compatible Compatible with the ATX12V v2.2 and EPS12V standards, the OCZ ModXStream Pro OCZ500MXSP provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and server computer systems.
  • newegg 500W Maximum Power A maximum power of 500W delivers safe, reliable output for high-end gaming computer systems. Dual industry-leading independent +12v rails are provided for more stable and safer power output.
  • newegg 80 PLUSCertified The 80 PLUS certified power supply provides high power efficiency of at least 80% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • newegg NVIDIA SLI Certified The OCZ ModXStream Pro OCZ500MXSP power supply has gone through a series of rigorous NVIDIA SLI certification tests for maximum system stability when building NVIDIA SLI PCs.
  • newegg 135mm Silent Cooling Fan The OCZ ModXStream Pro OCZ500MXSP features a 135mm thermally controlled fan for increased overall airflow and heat dissipation in the power supply enclosure.
  • newegg Modular Cable Design The modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.

Learn more about the FirePower Technology, Inc. OCZ500MXSP


ModXStream Pro


ATX12V V2.2 / EPS12V
Maximum Power
1 x 135mm Fan
Main Connector
+12V Rails
PCI-Express Connector
1 x 6-Pin, 1 x 6+2-Pin
SATA Power Connector
SLI Certified
Haswell Support
CrossFire Ready
Typical load 86% Efficiency
80 PLUS Certified
Over Voltage Protection
Input Voltage
100 - 240 V
Input Frequency Range
50/60 Hz
+3.3V@25A, +5V@25A, +12V1@18A, +12V2@18A, -12V@0.3A, +5VSB@2.5A
>100,000 Hours
5.9" x 3.4" x 6.5"


1 x Main connector (20+4Pin)
1 x 12V(4 Pin) CPU
1 x 12V(8 Pin) CPU
4 x Peripheral
6 x SATA
2 x Floppy
2 x PCI-E
OCZ PowerWhisper Technology


FirePower Technology, Inc.
Model Name

Manufacturer Warranty

3 years limited
3 years limited

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the FirePower Technology, Inc. OCZ500MXSP

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  • Israel R.
  • 11/24/2014 10:06:19 AM
  • Tech Level: Low
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat PSU

Pros: *Great PSU for the price
*Modular is the way to go, and this PSU taught me that
*Never gave me a problem
*Goodbye OCZ (now fire something under ownership of a different company)

Cons: None

Other Thoughts: I am typing this review with a different power supply. The only reason I purchased a new power supply was because I needed more power, and OCZ no longer exists as the company brand that it use to. But the PSU was great, and i have it as a back up in case my current PSU dies.

Did you find this review helpful? Yes No

  • james c.
  • 4/5/2014 10:05:06 AM
  • Tech Level: High
  • Ownership: more than 1 year

5 out of 5 eggsOCZ ModXStream Pro 600W Modular High Performance Power Supply

Pros: affordable, reliable, and modular. consistent voltages no drops or spikes. sleeved cables. nice bag to keep extra cables in so you dont loose them. works great

Cons: some of the non-modular cables are to short, like the cpu power cable(4) when mounting PSU on the bottom. luckily mine reaches over the top of my motherboard but will need to get myself a ext cable when i install a vga card. Not a big deal extension cables are less than $8.

Other Thoughts: I bought this model, except it is a 600W, in Oct 2010 in a PC bundle kit. Its been working fine so far. Though in 2013 i did take it apart and thoroughly cleaned it out. Which Im sure will give it longer life.
my previous psu was from 1999 it still works to date because of simple maintenance. gotta keep them clean & cool !!

I would recommend this.

Did you find this review helpful? Yes No

  • Ben J.
  • 1/14/2014 7:07:39 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat!

Pros: 2 1/2 years and its still running like a champ. It's quiet and reliable.

Cons: None, it's worked perfectly for over 2 years, so I'm happy.

Other Thoughts: I'd recommend it for sure. Has been a great PSU for a long time going now.

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

  • Paul M.
  • 12/22/2013 6:02:30 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsnice overall

Pros: nice p/s; love the modular design as it really cleans up cable clutter; seems well made; has a nice weight to it; quiet

Cons: the split 12 v bus may not be the best design; had to play around with power distribution to get a GTX 650 running

Did you find this review helpful? Yes No

  • Derek V.
  • 11/26/2013 8:53:39 PM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsgood while it lasted

Pros: Semi modular good price

Cons: Died after 6 months

Did you find this review helpful? Yes No

  • Robert w.
  • 11/16/2013 11:04:41 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWonderful

Pros: 3 years later and it is still fully functional. Never had any problems with the PSU.

Cons: Doesnt make me dinner

Did you find this review helpful? Yes No

  • Beverly B.
  • 10/11/2013 11:40:03 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsRebate Ripoff

Pros: None

Cons: Submitted $30 rebate documentation to OCZ on 9.5 2013.

Was requested to resubmit copies by OCZ customer service representative on 10.2.2013, because OCZ claims they did not receive the originals.

After OCZ received the copies, I was eMailed the following:

Signed Rebate Form is missing
- Original UPC Barcode Label (#842024009108) (Not the shipping label barcode) is missing
- Barcode label is missing
- Postmark date is outside offer's time limit

Of cause the barcode/etc is missing, it was send with the original documentation on 9.5.2013

Other Thoughts: Beware of OCZ rebates

Manufacturer Response:

Dear Anonymous Consumer,

We are always willing to help investigate any rebate issue you might have. We can help with lost/missing rebates, errors, missing documents, and tracking right at We would be happy to investigate this; if there is an error on our part we will definitely make it right.

Please use the link below to contact us and we will assist however possible.

We are very sorry for the inconvenience.

Kind Regards,
OCZ Support

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

  • Dan M.
  • 10/4/2013 1:11:29 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggs3 Years and Counting

Pros: Have been running this PSU for over 3 years now without any issues.

Semi-Modular design allows for leaving out any un-needed cables. It also comes with a nice bag for the extra cables.

Reliably has been providing power to my GTX 550 TI and the rest of my system (CoreDue 2.93Ghz, mATX Intel Mobo, Patriot RAM 4GB, Optical drive).

Cons: It does not have many Molex plugs or PCI-E 6-2 or 8 Pin plugs.

When a friend sold me a GTX 670 which requires x2 8pins, I had to use the double molex to 8pin adapters. That left me with no extra molex plugs to power my optical drive.

For this I only took off one egg as I should have looked into it before buying the card. Also I was able to find a cheap optical drive that used SATA.

Other Thoughts: Great for small systems and has been reliable for me for the past 3 years.

Did you find this review helpful? Yes No

  • Adam C.
  • 9/24/2013 2:53:05 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsQuiet and modular

Pros: This is definately one quiet power supply, hardly a whisper can be heard from it. Can't yet say it doesn't do what it's supposed to, so basically no power issues with it at the start. Modular cable design prevents a lot of clutter of cords inside the case for better air circulation.

Cons: It's a bit of a tight fit compared to my older power supply, so double check your measurements. The top-of-case mounting design is for just that, mounting at the top of a case, and because of that cords 'just' reach everything it needs in such a setup. NOT for anyone who needs more than a good 1 foot of cable to connect it to the motherboard.

Only a minor grip I also noticed is that the product no longer retails with the carry pouch to hold the extra cables that you will not be using. Personally I could care less as I would just keep it all in the origional box anyways.

Other Thoughts: The sleved cables are quite stiff, which I found as a doulbe edged sword. They hold in whatever position or place you put them in, and in the end I only used 1 pull tie for the entire cable management. On the other hand, the stiffness makes them a bit hard to move and positio initially. So anyone ready can take that in whichever they prefer.

Did you find this review helpful? Yes No

  • Larry R.
  • 9/23/2013 4:42:37 PM
  • Tech Level: Average
  • Ownership: more than 1 year
  • Verified Owner

2 out of 5 eggsBelow average

Pros: Seemed quiet, worked as expected.

Cons: after just a little over a year of ownership, it stopped working. No power surges or anything that should have caused an issue. For $50 I guess being a middle ground power supply can't expect much more. Now I'm shopping for a new one.

Manufacturer Response:

Dear Valued Consumer,

Please contact our Tech Support so we can assist with your issue. We can determine if the PSU does have a problem or if the problem is related to something else in your system. If the PSU has an issue we will make a warranty determination and provide a replacement in accordance with the warranty terms if necessary. Please contact us using the link below.

We are very sorry for the inconvenience!

Kind Regards,
OCZ Support

Did you find this review helpful? Yes No

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