Geforce GTX285 overclocking thread

[Blkout]

Currently running at 799c/1656s/1485m on water cooling. These are ACTUAL clocks, per Nvidia's step clocking process. Strangely, 3DMARK Vantage pulls heavily on the video card memory during the PhysX test as I can't overlock the memory past 1440Mhz when running this test with PhysX enabled, even though it will pass all other tests in Vantage and any other benchmark, Crysis included at 1485MHz. That being said, I don't think I have any games that really use PhysX much to see if it will fail above 1440MHz in gaming, or if it's just Vantage causing this limitation.

[Demo]

Going to get a GTX285 very soon, whats the safe temps for these babies to run at 24/7 ?

[Blkout]

Going to get a GTX285 very soon, whats the safe temps for these babies to run at 24/7 ?

It won't exceed 85c unless you have terrible cooling in your case. If you leave the fan on auto setting, it will reach 85c under heavy loads as the fans ramps up slowly, however if you set the fan to a manual setting higher than 40%, you can usually keep temps lower than 85c. If you can stand the fan noise, you can set it to 80% and you'll rarely ever exceed 65-70c.

[Celcius]

I run my fan at 75% and my max load temp is 71C (during crysis).

For some reason my card doesn't like it when I OC the shader. Anyone have an idea of why? Yesterday I played through the entire campaign of COD:WAW plus a little bit of some other games at the clocks in my sig and they're stable but I'm just curious about the shader...

[ReverendMaynard]

some final stock cooling clocks.

[G4h4o8s6T]

Currently running at 799c/1656s/1485m on water cooling. These are ACTUAL clocks, per Nvidia's step clocking process. Strangely, 3DMARK Vantage pulls heavily on the video card memory during the PhysX test as I can't overlock the memory past 1440Mhz when running this test with PhysX enabled, even though it will pass all other tests in Vantage and any other benchmark, Crysis included at 1485MHz. That being said, I don't think I have any games that really use PhysX much to see if it will fail above 1440MHz in gaming, or if it's just Vantage causing this limitation.

Nice clocks, did you end up getting a FC block, and what are your temps. like? And is that with stock volts, or did you vmod?

So far Im able to do 810c/1836s 15min furmark with 2.28v, but need to do more testing.

[Carfax]

I run my fan at 75% and my max load temp is 71C (during crysis).

For some reason my card doesn't like it when I OC the shader. Anyone have an idea of why? Yesterday I played through the entire campaign of COD:WAW plus a little bit of some other games at the clocks in my sig and they're stable but I'm just curious about the shader...

Some cards are just shader sensitive.. Although yours seems to be overly so if it won't go past 1476.

A vanilla GTX 285 is usually able to do up to at least 1585 on the shader..

Did you unlink your shader clock?

[Zenoth]

My vanilla eVGA GTX285 is a poor over-clocker when it comes to its Memory, the Core and Shader frequencies however can be high enough I'd say. But the Memory just refuses to stay stable as soon as I go above 1332Mhz, after which it either locks-up or crashes the system after 10 minutes of FurMark (during which the load temperature reaches 86ºC). So the card is already going hot enough in FurMark, so I decided to stay at my current 702/1512/1332 over-clock which corresponds more or less to the SC edition's speeds. The temps however are probably reaching that high due to the fan speed being at 73%, because I cannot for the love of God sustain the jet-engine-like loudness of the fan past 80% speed, much less at 90%+, at which point it becomes simply immoral and inhuman.

[Celcius]

Some cards are just shader sensitive.. Although yours seems to be overly so if it won't go past 1476.

A vanilla GTX 285 is usually able to do up to at least 1585 on the shader..

Did you unlink your shader clock?

Yes and I'm using evga precision to OC. The shader might go a little past stock, but the lowest OC I tested was 1500. If it won't even get 1500 then I might as well leave the shader at stock.
As long as the core and mem OC then I'm good

[Carfax]

My vanilla eVGA GTX285 is a poor over-clocker when it comes to its Memory, the Core and Shader frequencies however can be high enough I'd say. But the Memory just refuses to stay stable as soon as I go above 1332Mhz, after which it either locks-up or crashes the system after 10 minutes of FurMark (during which the load temperature reaches 86ºC). So the card is already going hot enough in FurMark, so I decided to stay at my current 702/1512/1332 over-clock which corresponds more or less to the SC edition's speeds. The temps however are probably reaching that high due to the fan speed being at 73%, because I cannot for the love of God sustain the jet-engine-like loudness of the fan past 80% speed, much less at 90%+, at which point it becomes simply immoral and inhuman.

Your load temp is 86c with your fan speed set to 73?

What kind of case do you have? Those temps are a little high, especially since you have your fan speed set considerably above the default.

[Carfax]

Yes and I'm using evga precision to OC. The shader might go a little past stock, but the lowest OC I tested was 1500. If it won't even get 1500 then I might as well leave the shader at stock.
As long as the core and mem OC then I'm good

Yeah apparently the GTX 200 series benefits more from core clock than shader clock..

You could try setting it to 756 though, if you want to squeeze more performance out of it.

[Blkout]

Nice clocks, did you end up getting a FC block, and what are your temps. like? And is that with stock volts, or did you vmod?

So far Im able to do 810c/1836s 15min furmark with 2.28v, but need to do more testing.

I went with the EK block against my better judgment but it's actually turned out to be a good block from a performance standpoint. I did have an issue with the factory O-ring gasket being pinched and leaking water when I started it up for the first time, but Eddy at EK was very responsive and apologetic and is sending me another O-ring gasket. In the meantime, I used silicone RTV sealent to create a new gasket and seal it up. It's been working fine since Friday.

At idle, GPU is 35c, memory is 29c according to Everest 5.0. GPU is 43c during the OCCT GPU test. Stock voltage, no other mods.

My waterloop consists of a Wolfldale E8400 @ 4.1GHz and of course the GTX 285, swiftech dual rad, nothing special or fancy.

[Demo]

Wow 765 sounds pretty high on stock cooling and volts

[Blkout]

Wow 765 sounds pretty high on stock cooling and volts

Many of the 285's are getting somewhere around this range on stock cooling and voltage, especially the eVGA's.

[Demo]

Many of the 285's are getting somewhere around this range on stock cooling and voltage, especially the eVGA's.

I see, my retailer informed me that ill be getting my GTX285 tom afternoon or wed morning, whats safe max voltage for VGPU/MEM for 24/7 air cooling ?

[firas]

I thought I can softmod the volt as mentioned here, but seems that hardmod (mentioned here and here)is the only way to do it

GTX285 does not support software voltage manipulation. Its voltage controller does not have an I2C or serial interface allowing programs to control it. The only way to adjust the voltage is by doing a hard mod using a resistor/variable resistor or bridging VID connections. Only video cards with volterra VT11XX voltage controllers can use the rivatuner/EVGA tool to adjust voltage.

true?


btw, idles at around 53, 77@load (fan@40%), and reached 88 in about 1 minute before I immediately close that furmark thing (fan@100%)

[Demo]

@firas

Thanks for the heads up, gonna prepare my conductive ink then.

But best way to know is to try, i believe nothing will go wrong.

[deathman20]

Got this with my i7 920 @ 3.8Ghz in Vantage Performance
P16617 http://service.futuremark.com/compare?3dmv=823502

756/1620/1404

This seems to be the max I can top at. I know my shaders are maxed well unless my core clock is running 702 then I can bump it to 1656, the core is nearly maxed and not sure I want to push it the next notch up, and memory unsure if its maxed or not but with the minimal benefit to even OCing it more I doubt I'll do it, its fast as is.

Wish there was software voltage control. Want more speed Temp wise 65% fan speed, with 68C in Warhead, 66C in 3D Vantage.

[Demo]

Wish there was software voltage control. Want more speed Temp wise 65% fan speed, with 68C in Warhead, 66C in 3D Vantage.

Theres a patched evga tuner that is supposed to work on all cards, maybe you can try that?

[deathman20]

Theres a patched evga tuner that is supposed to work on all cards, maybe you can try that?

The patched version that I've see is the one that allows increased voltage tuning. Other then that I haven't seen one. If there is im sure people would love to know where to get it.

[veedubfreak]

I'm able to run 756 core and 1400 memory. Havent been able to get anything past that without crashing. Waiting for the voltage tuner. 45c load temps on water across all 3 cards.

[Demo]

So both the EVGA and Rivatuner methods dont work with these new GTX285's ?

[LexDiamonds]

So both the EVGA and Rivatuner methods dont work with these new GTX285's ?

Correct. As has been noted in multiple threads, the 285 uses a different (cheaper) voltage regulator that doesnt allow volt stepping ala the 65nm 260s and 280s. EVGAs tools are based directly off of Rivatuner...

Napalm has a excellent thread on 285 hardmods....

[Zenoth]

Your load temp is 86c with your fan speed set to 73?

What kind of case do you have? Those temps are a little high, especially since you have your fan speed set considerably above the default.

It's reaching 86ºC in FurMark only, or with the latest OCCT 3.0.0's GPU stress test, but there's none of my games able to make my GTX285 that hot. It's the same with CPU's, no games out there will make a CPU work and get hot as much as Prime95 or Orthos at Priority 10 could do.

So yeah, my GTX285 at load in Crysis for example (1280x960, 4xMSAA and 16xAF) will reach around 75ºC. I still base my maximum over-clocks based on the stability and heat I get from FurMark or other GPU synthetic benchmarks or stability tests however, since no games out there can stress a GPU as much as FurMark can, so the best GPU test for stability isn't gaming, at least not in my book, as much as the best stability test for a CPU isn't just playing Crysis or UTIII for even a full day non-stop.

[Demo]

Ive been wondering what an artifact in furmark looks like,, the same old torn textures / yellow blinking dots?