[the_xpert]

Hi,

I have never OCd a graphics card before and I wanted to try it out. I have the EVGA Precision tool open and I have the Core/Shader clock linked so when I increase the core it auto increases the shader. However, the Memory clock stays the same and I don't know where to put it. I also don't know how much to even try for or what to shoot for (or where to start!)

Do I want both GPUs (GPU1 + GPU2) to have the same exact clocks? Do I OC one and leave the other default?

Default settings are:

Core: 576
Shader: 1242
Memory: 999

Max settings allowed are (haven't applied these):

Core: 925
Shader: 1994
Memory: 1600

Where to start?

 

[Bo_Punk_2.0]

Is your card a dual PCB "sandwich" card? Or a single PCB "CO-OP"?

EDIT: Based on those clocks, it's a dual-PCB. My first bit of advice would be to download MSI Afterburner so you can control voltage. This will aid you in achieving higher overclocks.

 

[the_xpert]

Quote:

Originally Posted by Bo_Punk_2.0 Is your card a dual PCB "sandwich" card? Or a single PCB "CO-OP"? EDIT: Based on those clocks, it's a dual-PCB. My first bit of advice would be to download MSI Afterburner so you can control voltage. This will aid you in achieving higher overclocks.

It is the dual PCB card. I will get MSI Afterburner, but again I have no idea even where to start in changing the clocks, what to shoot for, and also the voltage to go along with it.

 

[Bo_Punk_2.0]

No, you don't *need* to install kombustor. But it is good for testing stability and temperatures after overclocking.

For reference, here was a solid overclock I achieved on my 295. If you need anymore help getting MSI Afterburner setup. Let me know...

 

[the_xpert]

Quote:

Originally Posted by Bo_Punk_2.0 No, you don't *need* to install kombustor. But it is good for testing stability and temperatures after overclocking. For reference, here was a solid overclock I achieved on my 295. If you need anymore help getting MSI Afterburner setup. Let me know... http://img.photobucket.com/albums/v6...X295Clocks.jpg

I am starting out putting in your settings and seeing what happens. I would like to go increment by increment though. I can't get the fan speed to 100%. Even if it user defined it only stays at 80%.

 

[Bo_Punk_2.0]

Quote:

Originally Posted by the_xpert I am starting out putting in your settings and seeing what happens. I would like to go increment by increment though. I can't get the fan speed to 100%. Even if it user defined it only stays at 80%.

In the Settings Tab under General, switch from GPU1 to GPU2... you should now have fan control. Also, make sure Voltage Control, Voltage Monitoring, and Synchronize are checked.

If you're going to be running 100% fan, I would think that your card would be able to handle those clocks, but incrementally is definitely a good way to go. From what I can remember, I was only able to get like 630mhz on the core before needing more voltage.

 

[Imglidinhere]

+300mhz on the core...
+700mhz on the shader...
+650mhz on the memory...

I HIGHLY doubt that you will manage those clocks... Unless you are about to try to volt mod it AND put a waterblock on it, I wouldn't try it. If you did manage that though... I think you'd give a 5970 a run for it's money.

Be like... O_O "Did the 295 just go Super Saiyan!?"

 

[the_xpert]

Quote:

Originally Posted by Imglidinhere +300mhz on the core... +700mhz on the shader... +650mhz on the memory... I HIGHLY doubt that you will manage those clocks... Unless you are about to try to volt mod it AND put a waterblock on it, I wouldn't try it. If you did manage that though... I think you'd give a 5970 a run for it's money. Be like... O_O "Did the 295 just go Super Saiyan!?"

Here I am, with his exact clocks.

The 100% fan sounds like a jet engine. Any stability tests to run to check this now (OCCT?) Do I really need this fan at 100% because if I leave it at auto the fan is only running at 41%?

 

[Bo_Punk_2.0]

You can make a custom fan profile under the "Fan" tab...

Your idle temps are concerning me a bit, but I just like to run things extra cool.

If you have to, drop it down to 1050mv, and go with a 675mhz core clock... leave the ram set at 1200 or so.

BTW: Link your core and shader clocks for now.

 

[the_xpert]

Quote:

Originally Posted by Bo_Punk_2.0 You can make a custom fan profile under the "Fan" tab... Your idle temps are concerning me a bit, but I just like to run things extra cool. If you have to, drop it down to 1050mv, and go with a 675mhz core clock... leave the ram set at 1200 or so.

Just made the custom profile:

50C = 50% Speed
80C = 100% Speed

What kind of stress tests should I bench to ensure stability? (How many runs/How long?)

 

[Bo_Punk_2.0]

Quote:

Originally Posted by the_xpert Just made the custom profile: 50C = 50% Speed 80C = 100% Speed What kind of stress tests should I bench to ensure stability? (How many runs/How long?)

Game on it...

Many others would say Furmark, Kombustor, or OCCT GPU, but I just game on my clocks. If everything is good thermally with no artifacts, it's good to me.

If you've got Crysis, play it on Very High for awhile. Or, just run the Crysis Benchmark Tool, set on 10 loops or so. Keep tabs on your temps though.

 

[Hawk777th]

Im trying to adjust my voltage in msi afterburner and I checked unlcok voltage and it is still greyed out what gives?

 

[JohnDProb]

hes running an evga gtx2xx card he should be using the gpu voltage tool you can get off evga

 

[Hawk777th]

I dont think evga precision will let you fool with voltages?

 

[unreal_calibur]

evga has a a voltage tool. its not on precision but it separate.

 

[broken pixel]

Time to test some OC's

 

[bitMobber]

How are you guys able to change your Core Voltage in Afterburner?

I have a MSI GTX295 and the bar is grayed out for me, I've tried every setting to change it. I've noticed you guys were using older drives, I just installed 258.96, maybe thats the reason?

 

[hwing91]

When I run crysis or 3dmark06, my clocks sometimes stay at some low number in CPU-z such as 300/400/800. Then I get horrible FPS...I have to disable SLI and reinable it to get my clocks back at the standard 576/1242/999. Anyone know why?

And I can't seem to get 715/1530/1212 stable even with 1.2v...