Is my PSU powerful enough for CF 6950's

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28 Feb 2012
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Hi all just a bit of info needed please, Ive got x2 6950's one in my rig and one on the way and Ive got a 680w PSU. Would this be able to power them both or do I need to upgrade my PSU now aswell?

Link removed my appologies.

680w Be Quiet and the rest of the setup is as follows

Coolermaster Storm Sniper Mesh Edition
Coolermaster V6GT Cooler
Intel Core i5 2500k Unlocked SandyBridge @3.30 GHz Retail (not sure but after the 3.30 GHz on system info it says 3.60 Ghz does that mean its overclocked?)
500Gb Hitachi Deskstar 7200rpm
128gb Crucial M4 SSD
2 x 4Gb Corsair Vengence LP DDR3 1600mhz Ram
Gigabyte GA-Z68XP UD3P
680W Be Quiet Straight Power Modular PSU
Windows 7 Premium 64bit Retail




Thanks in Advance :)
 
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You can't link competitors here.

If you can name the PSU then we'll be able to tell you, but from the sounds of it.. yes. 650W onwards should be fine so long as it's a good PSU.
 
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a good 650W PSU should be fine for 2 560tis or 6950.

Of course this is hard to say unless you state what your PSU is (as stated dont link competitors) and i would be nice to know the exact setup you are using (CPU especially for it's power draw and if it's OC'd)
 
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Your good!

Download CPU-Z it can tell you the clock speed of the CPU and RAM etc. It's worth running prime 95 or a video etc to work the CPU so you see it's speed when stressed. The rig may well be set to "idle" when it's not being used so CPUZ would show a much slower CPU speed.

Even on the stock heatsink you should be able to happily get to 4ghz on that CPU if you were interested. THe i5K is multiplier unlocked so overclocking is actually very simple.

p.s prime95 is stress testing software and is very useful for testing the stability of your overclock
 
cpuz.png
 
See where it says core speed in the bottom left? It's currently running at 1.6ghz ("idling") now run a video or prime 95 watch it as it will increase to the CPUs set clock speed. If it levels off at 3300 then you have 3.3 stock settings.

The multiplier multiplied by the bus speed gives you your core speed. If you set the mulitiplier in the bios to 40 let's say......you would be setting the CPU to run upto 4ghz when needed (40 X 100 = 4000mhz, 4Ghz)

Hope that makes sense?
 
Just ran 1080p movie and went upto 3.50GHz so I think it must be on 3.60GHz

Well it's not peaking at 4ghz and you have an aftermarket cooler. You could push that CPU much further. See what you can get stable upto for 70 deg C temps under stress testing (prime95 for example).

There is hardware monitor from CPUID (they did CPUZ) this can help you monitor your temps when overclocking and testing. There is also GPU Z and MSI afterburner if you fancy doing GPU overclocks too.

It's all free software, how you use it all however is a discussion for another time...it's late lol
 
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