Clocking a pair of 480's

ChrisLandin · 29 Mar 2011 at 09:40

Hiya all,

just wanting a little info around clocking GTX 480's.

Both will be under water so im just wondering whats a reasonable overclock on these babies.

Also I have afterburner so I can play with voltages I believe. At the moment they are running at 700, 1401, 1848 on the settings 1012 on the voltage. This is stock.

So im just wanting to clock them a reasonable amount, not to insane levels so I can get a little more performance from them.

I could google all the info but I would rather get some first hand info from you guys,

Cheers all.

RichardH754 · 29 Mar 2011 at 09:42

What PSU do you have?

ChrisLandin · 29 Mar 2011 at 09:43

Corsair 1000w

RichardH754 · 29 Mar 2011 at 09:44

Oh, mine cuts out when I get to 850hz on the 2 480s

HeX · 29 Mar 2011 at 09:46

820-850 on the core seems common.

And 4-4.2GHz on the mem.

ChrisLandin · 29 Mar 2011 at 09:51

RichardH754 said:
Oh, mine cuts out when I get to 850hz on the 2 480s

What cuts out?

ChrisLandin · 29 Mar 2011 at 09:52

HeX said:
820-850 on the core seems common.

And 4-4.2GHz on the mem.

Obviously that would be with a voltage bump??

peahead · 29 Mar 2011 at 10:00

Hi

Had both mine clocked at 820 core and 4000 mem at stock volts any higher and they would need a voltage tweak.

This is with stock cooling of course.

RichardH754 · 29 Mar 2011 at 10:53

running OCCT PSU testers at 850 each core on the 480s swiches off the PC!

HeX · 29 Mar 2011 at 10:56

That PSU tester is ridiculous I wouldn't even touch it.

Just loop Heaven or something instead.

bl4ckdr4g0n · 29 Mar 2011 at 11:04

OCCT is severe i'd do as HeX says

RichardH754 · 29 Mar 2011 at 11:19

I was getting worried, Are you sure its not my HX1000?

hyperst · 29 Mar 2011 at 12:00

isn't there quite a big warning about that OCCT psu tester about it damaging your system, not something I would run that is for sure

to the above question, it could well be you psu now, if occt has damaged it

Amos91 · 29 Mar 2011 at 12:11

ChrisLandin said:
Hiya all,

just wanting a little info around clocking GTX 480's.

Both will be under water so im just wondering whats a reasonable overclock on these babies.

Also I have afterburner so I can play with voltages I believe. At the moment they are running at 700, 1401, 1848 on the settings 1012 on the voltage. This is stock.

So im just wanting to clock them a reasonable amount, not to insane levels so I can get a little more performance from them.

I could google all the info but I would rather get some first hand info from you guys,

Cheers all.

With the unlocked bios many get theirs on watercooling to 900 core. Mine is at 875mhz atm with stock cooling...

layte · 29 Mar 2011 at 12:37

I run my pair of WC'd 480's at the following settings in Afterburner.

Core Voltage: 1113
Core clock: 900
Memory clock: 2050

They are perfectly stable, no matter what I throw at them.

Edit: My PSU is a Be Quiet! DPP 1200W, which can handle very heavy loads. http://homepages.nildram.co.uk/~layte/pics/IMAG0046.jpg (That was a Furmark and Prime95 torture test)

jinxpad · 29 Mar 2011 at 12:57

I can only speak for a single card, but I'm running mine at 900/2100 with core voltage of 1100, perfectly stable here. Temps peak at 52oC.

RichardH754 · 29 Mar 2011 at 14:06

I thought the HX1000 was a good make of PSU, and could handle tests?

HeX · 29 Mar 2011 at 14:41

HX1000 is good.

But the OCCT PSU test is mental.

It basically fully loads everything in your rig at once.

Nothing you play will EVER do that.

nickrose · 29 Mar 2011 at 14:49

Mine are at 900Mhz under water, don't know what voltage is, I used the EVGA precision tool so just altered the core speed. Temps max at 50c.
Can get to 930 but just starts to artifact slightly in some games.

ChrisLandin · 29 Mar 2011 at 22:05

nickrose said:
Mine are at 900Mhz under water, don't know what voltage is, I used the EVGA precision tool so just altered the core speed. Temps max at 50c.
Can get to 930 but just starts to artifact slightly in some games.

Nick I see your also running a 280. I presume its just for physx, any major improvements with it in the system?