Roundup: 12 Gaming Power Supplies Compared
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Page 1:New Tests: Ripple And Noise
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Page 2:Antec TP-750
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Page 3:Antec TP-750: Results
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Page 4:be quiet! Straight Power E8
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Page 5:be quiet! Straight Power E8: Results
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Page 6:Chieftec BPS-750C
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Page 7:Chieftec BPS-750C: Results
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Page 8:Cooler Master GX 750
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Page 9:Cooler Master GX 750: Results
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Page 10:Cooler Master Silent Pro Gold 700
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Page 11:Cooler Master Silent Pro Gold 700: Results
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Page 12:Corsair CMPSU-AX850
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Page 13:Corsair CMPSU-AX850: Results
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Page 14:Cougar SX700
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Page 15:Cougar SX700: Results
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Page 16:Enermax Modu 87+ 700 W
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Page 17:Enermax Modu 87+ 700 W: Results
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Page 18:NZXT HALE90-750M
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Page 19:NZXT HALE90-750M: Results
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Page 20:OCZ Fatal1ty 750 W
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Page 21:OCZ Fatal1ty 750 W: Results
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Page 22:Seasonic X-750
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Page 23:Seasonic X-750: Results
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Page 24:Sparkle SCC-750AF
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Page 25:Sparkle SCC-750AF: Results
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Page 26:Test Configuration, Hold-Up Time, Inrush Current, Peak, And Short Circuit Tests
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Page 27:Efficiency According To 80 PLUS, Temperature, And Standby Overview
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Page 28:Efficiency Under Different Load Profiles
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Page 29:Conclusion And Recommendation
Corsair CMPSU-AX850
The Corsair CMPSU-850AX stands out in this roundup in two ways. First, its 850 W power rating puts it at the top with regard to output. And second, according to the manufacturer, this is a PSU suitable for professional environments, not specifically for gamers. Its performance and features surely make it suitable for gamers, just like the other power supplies. Corsair underlines its confidence in the quality of the PSU with an impressive seven-year warranty. Altogether, this is also reflected in the price of $180.
An interesting feature, just like on Seasonic's submission, is a fan that only powers up when there is at least a 20% load (around 170 W). Up until that point, it remains silent. In this way, your gaming PC stays quiet during work time, too.
All cables are modular, and the single +12 V rail can handle up to 70 A. The cable lengths and number of connectors are fairly generous.
Corsair CMPSU-AX850 | ||||||||
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AC Input | 90-264 V, 50-60 Hz | |||||||
DC Output | +3.3 V | +5 V | +12 V (#1) | +12 V (#2) | +12 V (#3) | +12 V (#4) | -12 V | +5 Vsb |
25 A | 25 A | 70 A | n/a | n/a | n/a | 0.5 A | 3.0 A | |
Individual Output | 6 W | 15 W | ||||||
Rail Utilization | Sys | Sys | CPU & VGA | |||||
Combined Output | 125 W | 840 W | ||||||
Total Continuous Output | 850 W | |||||||
Peak Output | ??? W |
- New Tests: Ripple And Noise
- Antec TP-750
- Antec TP-750: Results
- be quiet! Straight Power E8
- be quiet! Straight Power E8: Results
- Chieftec BPS-750C
- Chieftec BPS-750C: Results
- Cooler Master GX 750
- Cooler Master GX 750: Results
- Cooler Master Silent Pro Gold 700
- Cooler Master Silent Pro Gold 700: Results
- Corsair CMPSU-AX850
- Corsair CMPSU-AX850: Results
- Cougar SX700
- Cougar SX700: Results
- Enermax Modu 87+ 700 W
- Enermax Modu 87+ 700 W: Results
- NZXT HALE90-750M
- NZXT HALE90-750M: Results
- OCZ Fatal1ty 750 W
- OCZ Fatal1ty 750 W: Results
- Seasonic X-750
- Seasonic X-750: Results
- Sparkle SCC-750AF
- Sparkle SCC-750AF: Results
- Test Configuration, Hold-Up Time, Inrush Current, Peak, And Short Circuit Tests
- Efficiency According To 80 PLUS, Temperature, And Standby Overview
- Efficiency Under Different Load Profiles
- Conclusion And Recommendation
The article doesn't appear to measure noise from during switching and how much noise is introduced to the CPU and bus.
Anyway, it will be a cold day in hell before anyone gets me to switch out my Silverstone 1500 Watt PSU.
You are either lying or very unlucky (got a bad PSU)......I have crossfire 5870s and an i7 965 and all stock cannot exceed 650W at the wall (about 550W actually used) no matter what I try.
I call BS. I could run your setup with my PC power & cooling 750w unit.
http://www.techspot.com/review/289-geforce-gtx-480-sli-versus-radeon-5870-crossfire/page9.html
My next build will be in an NZXT full tower, and I am particularly interested in the Antec 850W, which I believe is the same line as the 750 tested. The report mentioned something about the cables being a bit short for full towers, I'd like to know exact cable lengths, and does anyone know if the 850W model cables may be a little longer?
You're kidding right? You mention the NZXT power supply as "being one of the best", but no mention or recommendation for the Seasonic (even tough according to your own tests the Seasonic handily beats the NZXT)?
Seasonic is one of the, if not thee, best power supply houses in the land. Most of the times if you see a real good power supply from another brand, it turns out it was a Seasonic unit. I'm not saying there are no other good manufacturers out there... But, to not even to get a nod or anything in the conclusion??
Review fail.
So, essentially it will pick away at your RAM. No thanks.
"...its single +12 V rail (preferable to all of the units with dinkier +12 V output spread over multiple rails)..."
I call BS. I'd much rather have multiple +12V rails. With OCP set appropriately, there's no issue of power being "trapped" anywhere, yet it will be safer in the event of near short-circuit conditions.
I'll be building either a SB or BD rig for myself in late Spring or early Summer, and I already picked up the 560W model of the Seasonic "X" line for it ($71 for the one HardwareSecrets reviewed).
Remember too, that 80+ tests at the absurdly low ambient temperature of 23C. While I think their tests are still generally valid, and will certainly clear out the liar-labeled units, for a certified unit to fail by a couple percent under real world conditions is not too unusual.