Joined: 07 Apr 2003 Posts: 16817 Location: New Jersey
Posted: Mon, 24 Mar 2008 13:56:39 Post Subject:
Sounds like the most likely cause is overheating... You don't want to upgrade the cooler? How about adding a fan in the area, like a 80mm aiming down on it something like a CoolIT PCI Cooling Booster? _________________
Since I only have one radiator I am a little lost in how to get it optimal? _________________ --------------
Intel Q6600
ASUS Striker Extreme
4 x 2 GB Corsair XMS2 Xtreme PC6400 - CL4
eVGA 8800GTX
Thermaltake Kandalf LCS w. Watercooling
Thermaltake Toughpower 850W
250 GB SEAGATE BARRACUDA 7200.10 -16 MB-SATA II
BUT! I still cant go higher than 629MHz/999MHz with my OC?
Can someone explain this for me? I need to reach the 3dmark06 17.000 barrier. PLEASSSEEEEEE _________________ --------------
Intel Q6600
ASUS Striker Extreme
4 x 2 GB Corsair XMS2 Xtreme PC6400 - CL4
eVGA 8800GTX
Thermaltake Kandalf LCS w. Watercooling
Thermaltake Toughpower 850W
250 GB SEAGATE BARRACUDA 7200.10 -16 MB-SATA II
Joined: 07 Apr 2003 Posts: 16817 Location: New Jersey
Posted: Tue, 25 Mar 2008 19:04:03 Post Subject:
Might be all the card has to offer. Maybe take the memory speed back down to see if that is limiting the OC. Perhaps the core could go higher, but not the memory.
And while it probably doesn't matter, I would probably go:
Reservoir -> Pump -> CPU -> GPU -> Radiator _________________
Joined: 14 Jun 2003 Posts: 8204 Location: In the naughty zone
Posted: Tue, 25 Mar 2008 21:43:16 Post Subject:
Doctor Feelgood wrote:
Might be all the card has to offer. Maybe take the memory speed back down to see if that is limiting the OC. Perhaps the core could go higher, but not the memory.
And while it probably doesn't matter, I would probably go:
Reservoir -> Pump -> CPU -> GPU -> Radiator
I don't know if it's feasible or not, but I think something like
That way you have 2 cool streams hitting both the GPU & CPU instead of a cool stream hitting the CPU and a warm stream hitting the GPU.
Being I'm NOT a water cooling expert, I don't know if the pumps you can buy would be strong enough to do that. _________________ I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States. - Oath of office of the President of the United States
"We spent 30 years digging ourselves into this hole. It won't be solved soon." - U.S. Energy Secretary Samuel Bodman
I was also thinking about using the Y connectors, but I didn’t have any. Another way of doing it was like Thermal take wrote by using another radiator between the GPU and CPU.
My problem regarding the Y connector or the second Radiator option was that I live in Denmark. I might be the only over clocker here, because no water-cooling accessories are available in the shops. The fastest way to get water-cooling equipment here is to order it from Sweden or Norway, which makes the delivery time at least a week.
I am very impatient, so I decided to do it as mentioned in one of my earlier posts:
Radiator -> GPU -> Reservoir -> CPU -> Radiator. This way there is a long between the hot components as possible and it can cool of a little. My experience now is that even though the GPU have been cooled before the CPU, only running through the reservoir gives the cooling it needs. It is hard to see any temperature changes in the CPU temps after the GPU cooling have been added, so I am still running 3600MHz at the CPU with no problems.
My water-cooling gear is now a black Thermal Take Kandalf LCD chassis with a Thermal Take ND4 GFX cooler.
Still only 14.035 in 3dmark 2006 (trial version from the futuremark homepage)
Next step must be doing the Vmod on the 8800GTX. _________________ --------------
Intel Q6600
ASUS Striker Extreme
4 x 2 GB Corsair XMS2 Xtreme PC6400 - CL4
eVGA 8800GTX
Thermaltake Kandalf LCS w. Watercooling
Thermaltake Toughpower 850W
250 GB SEAGATE BARRACUDA 7200.10 -16 MB-SATA II
Joined: 06 Feb 2008 Posts: 10 Location: Wasilla, AK
Posted: Mon, 07 Apr 2008 11:41:25 Post Subject: Re: Overclocking std. 8800GTX, how much is possible?
qwwwizx wrote:
Hi everybody.
I am overclocking my std. cooled eVGA 8800GTX. I use Nvidia nTune to do it and it is pretty boring. I need advice on how to get higher?
Factory defaults is 575MHz @ Core and 900 MHz @ Memory.
I am stable on 600MHz @ Core and 1000 MHz @ Memory.
I am unstable on 607MHz @ Core and 1027 MHz @ Memory (rebooting after 2 minutes in 3dmark 2006).
I use 3dmark2006 to test stability.
How much is possible? and do you have any tweaks/tricks to go higher?
/Casper
You may have to Flash the Cards BIOS to the 8800 Ultra's BIOS, which isn't all that difficult to do.
I'm running an MSI T2D768 8800 Ultra OC which runs stock at 660 Core/2200 Mem and its been a Fantastic Card. I've never had to OC it, as it runs Crysis just fine with an E6420 @ 3.2 Ghz.
Thank you for your answer.
I have been thinking about that, and found different bioses. I am a little afraid though.
I am able to go to 629 MHz on the core, and 1020 on the memory and so by using nvidia software OC. If I put a bios on it, and the bios force the GFX to run 660 Core/2200 Mem and it the hardware really can't, then I my GFX is doomed or can I re-program the bios back in some way?
/Casper _________________ --------------
Intel Q6600
ASUS Striker Extreme
4 x 2 GB Corsair XMS2 Xtreme PC6400 - CL4
eVGA 8800GTX
Thermaltake Kandalf LCS w. Watercooling
Thermaltake Toughpower 850W
250 GB SEAGATE BARRACUDA 7200.10 -16 MB-SATA II
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