AMD Radeon HD 2900 XT overclocking results

[Lane-k]

Lane-k, yes - the one you can see over at DD website.

Thanks Macci, but you are using a Maze 4 acetal or another cause i don't find full cover block for 2900 on their store.. (only for 19xx).. (And i like use full cover block ( core + mem + Voltage). From some shop here, i have the info DD will send them some soon...

But... Nice result MAcci

So far, i m really glad of the perf and OC of the card in bench..
I wait just a XTX or OC support for try them in Cfire ( i have kill all my score made with X1950 Cfire highly watercooled and OC with a single 2900, i will really want to see what will happend in Cfire..)

[Boble76]

Macci, any mods on card yet? What's water temperature when GPU is +45C ?

[macci]

Lane-k, its not in the shop yet but you can see the picture of the block from their main webpage. (direct link).

boble, no mods required =) didnt measure watertemp but it was probably below 20C

[cadaveca]

lol...when is someone gonna show 1350 mhz gpu....? I hope you will be first, Macci.

[Lane-k]

Lane-k, its not in the shop yet but you can see the picture of the block from their main webpage. (direct link).

boble, no mods required =) didnt measure watertemp but it was probably below 20C

Thanks... he this wb look so nice!!!

[Cornelious0_0]

Awesome to see everything going so well...my ICFX3200 is beggin' for one of these beasts.

[Sampsa]

Updated results with dry ice and little bit higher GPU voltage:

CPU: 4379 MHz
Radeon HD 2900 XT: 1000/1020 MHz

3DMark06: 16067

I'll update some pics after the weekend when I return from Amsterdam.

[perkam]

Whoa nice...16k single

Perkam

[macci]

I got the missing FPS or so: 800FPS Nature (1050/1035 clocks - with POOR phase cooler!):


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Minor update for Single card 3DMark05 also (same crappy phase cooler for the card in this run ) - CPU cooled w/ cascade -75C:


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[G H Z]

That 'crappy' cooler works pretty good

When will you break out the Evo

[LowRun]

That 'crappy' cooler works pretty good

When will you break out the Evo

The man is makin' the difference the crappy cooler don't

[Boble76]

I got the missing FPS or so: 800FPS Nature (1050/1035 clocks - with POOR phase cooler!):

Minor update for Single card 3DMark05 also (same crappy phase cooler for the card in this run ) - CPU cooled w/ cascade -75C:

Now you just need to get some LN2/CO2 for your cards and through that "crappy phase" into garbage.
Waiting for more...

[perkam]

Nice

Perkam

[Revv23]

macci it sure would be nice if you took a WR again. *wink*

[macci]

Really? hmm need to think about that - one thing is for sure: I would need to go and get some LN2 in order to get there!

-80C on CPU + watercooling on GFX only gets me about this far right now (PCIe clocks would give some extra points and GFX clocks could be easily higher too of course):

3DMark05:

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2k1:

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CrossFire rig:

[LowRun]

Someone please get macci some serious LN2, i badly wan' to see some more of his magic

[albertwesker]

4050 MHZ C2Q
2900XT @ 925/950 @ 1.35Vgpu
Cooling @ GPU: Swiftech MCW60

[BuBBle.D]

Offtopic:
I just bought an Xpertvision 2900XT since i had a great deal on it and i am wondering if anyone knows if it is built by ati or did palit/xpertvision build the card?

Soz for OT again.

[Gautam]

Those are beautiful benchmarks macci. Your runs always very clearly show that they are massaged by a very adept hand.

Does anything special need to be done for such nature results? I confess, I haven't touched CF yet. Any reason why the memory clock is relatively low?

[cadaveca]

timings adjust @ 1000mhz, making mem much slower.

[cantankerous]

timings adjust @ 1000mhz, making mem much slower.

strange because ViperJohn himself tested this theory out on ocforums and found it to be untrue? Another forum member from here (Deathman20) also noticed no change in timings by the score reflected being higher above 1000mhz than below.

[cadaveca]

yeah i know, but memory timings are driver dependant, AFAIK. Check what driver he is using in compare URL.

Also, I can overclock crossfire, when noone else can, so strange things are afoot.

[Gautam]

timings adjust @ 1000mhz, making mem much slower.

Perhaps its an effect you're seeing if using beta drivers, but on the release 7.5's, there is no such adjustment change until 1160MHz. I know macci's BIOS is far from stock...I wonder just how far it is.

[cadaveca]

lol i said it was driver-dependant...

[GLENBOY]

yeah i know, but memory timings are driver dependant, AFAIK. Check what driver he is using in compare URL.

Also, I can overclock crossfire, when noone else can, so strange things are afoot.

how can you overclock crossfire yet are you using overdrive with the 8 pin connectors in, on amd gpu tool my 3d clocks are greyed out , wish there was the facility to overclock my crossfired 2900s