Enthusiast Power Protection: Four-Way 900 W UPS Roundup

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It's downright negligent to ignore the power needs of your high-end hardware. While many power users go to the trouble of tracking down solid PSUs, we recommend going a step further and investing in battery backup. We round up four enthusiast units.

Test Settings

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Hardware Configuration
CPUIntel Core i7-950 (3.06 GHz, 8 MB Shared L3 Cache) O/C to 4.35 GHz (23 x 189 MHz), 1.40 V
MotherboardGigabyte X58A-UD3R, BIOS FB (08/24/2010) Intel X58 Express / ICH10R
RAMMushkin Enhanced 998586 (6 GB), DDR3-1333 at DDR3-1134 CAS 8-8-8-21
Graphics2 x EVGA 012-P3-1470-AR 1.25 GB, SLI O/C at 700 MHz GPU, GDDR5-3404
Hard Drive2 x A-Data AS599S-64GM-C 64GB SSD, Striped, MLC, SATA 3Gb/s
SoundIntegrated HD Audio
NetworkIntegrated Gigabit Networking
PowerSilverStone ST85F-P 850 W Modular ATX12V v2.3, EPS12V, 80 PLUS Silver, Active PFC
Software Configuration
OSMicrosoft Windows 7 Ultimate x64
GraphicsNvidia Graphics Driver Version 260.99
ChipsetIntel INF 9.1.2.1007
Benchmark Configuration
CPU LoadPrime95 v25.8. 64-bit executable, Small FFTs,  Eight Threads
GPU LoadFurMark 1.6.5 Stability Test, 1920x1200, 4x AA
Combined LoadPrime95 (Seven CPU Threads) plus FurMark (One CPU Thread)

Assembled for an upcoming overclocking article, our test system pulls 407 W under Prime95, 676W under FurMark, and 870W with both programs running at full force. FurMark requires one dedicated CPU thread to reach full GPU load.

Less-aggressive overclockers can get similar power consumption at far lower clock speeds using higher-cost hardware, such as Intel’s Core i7-980X processor and a pair of Nvidia’s GeForce GTX 580 graphics cards.

Thomas Soderstrom
Thomas Soderstrom
Thomas Soderstrom is a Senior Staff Editor at Tom's Hardware US. He tests and reviews cases, cooling, memory and motherboards.
68 Comments Comment from the forums
  • sudeshc
    Have been using APC for last 2 years now without any issues what so ever.
    Would recommend it although they might be a bit costly but they perform really well.
    Reply
  • hmp_goose
    Soooo you have nothing to say about the TripLite atoll? Dead last? Distant second? Muddled mess? Nice part for not-our-application?
    Reply
  • dEAne
    I have several units of APC and a hundred after-sales issues which remains unanswered, I opted to installed the generator set and a AVR than a UPS.
    Reply
  • Emperus
    Most folks would just be happy to ignore on the need for a backup power source.. Hope this article enlightens them on getting one to protect their precious components and/or be ready if and when the situation arises.. Would be great if Tom's could put up a tier based classification on suitable UPS choices for various PC's (gaming, server, home theatre etc.)..
    Reply
  • super_tycoon
    What about AVR? (Automatic Voltage Regulation) I have a CP1500AVRLCD and I've seen (at least I'm pretty sure) I've seen the AVR feature kick in when one of the local power lines got knocked out and the voltage drooped to ~100. (killed some of my non-dimmable cfl's) I went to CP's website and it claimed the pfc units still have AVR functionality. So here comes the confusion, what's the point of the voltage tolerances? If it has an AVR, why would it matter what voltage it's fed as long as there steps on the transformer? I thought the unit was supposed to take 90-140 without having to engage the battery while still passing ~120v?

    You've also made me want to test my non-pfc ups with my 850hx, but my gaming rig and my workstation are an hour apart....
    Reply
  • aldaia
    This is a quite inefficient & expensive approach to the problem. We take AC and use a transformer to convert to DC and store in a battery, meanwhile another transformer is also taking AC and converting to DC to feed our components. When there is a blackout, we take DC from the battery, convert to AC and feed the computer PS where we convert back to DC to feed our components. Wouldn't be more cost effective and energy efficient to use the same unit to both feed our components with DC and the battery? Most of the time a PS has a surplus of power that can be used to charge the battery. When there is a blackout we could just take DC from battery and feed our components without the inefficient double DC->AC->DC conversion. I think an integrated UPS/PS would be cheaper (most components are replicated). That would be enough for most enthusiasts, that only need a relatively short battery life to be able to save work. A different matter is in professional environments where a UPS feeds dozens of computers that cannot be stopped. ¿Anyone knows if such a think exists?
    Reply
  • wrxchris
    I've been using a CyberPower 1350AVR for the past couple years and it has been great. Gives me approx. 17 mins of runtime at idle / basic tasks (approx. 250 watts between my rig and main LCD). It's good for 810W, and I believe I picked it up on sale for $120.
    Reply
  • while i personally use APC XL series, what about eaton powerware??
    Reply
  • g00ey
    I've always been wondering about the possibilities to replace the small batteries in those UPSes with standard car batteries or deep cycle (marine) batteries. Since the batteries in the UPSes are standard 12V lead cells it shouldn't be a problem and this would be a cheap way to keep the computer alive for days without external power.
    Reply
  • nebun
    g00eyI've always been wondering about the possibilities to replace the small batteries in those UPSes with standard car batteries or deep cycle (marine) batteries. Since the batteries in the UPSes are standard 12V lead cells it shouldn't be a problem and this would be a cheap way to keep the computer alive for days without external power.wrong
    Reply