Overclocking the Palit GTX 670 JetStream

 

Couple of months ago, I bought a GTX 670 made by Palit. I did not buy the regular version. I bought the factory overclocked card in their JetStream series.

 

Why did I buy a factory overclocked card? Answer is simple. I knew my overclocking mileage would not be great. With the 100MHz or so stock overclock, I would not have felt bad if I could not overclock it at all.

 

Then, why did I choose this particular card? Again, the answer is simple. This was the cheapest factory overclocked card I could find.

 

	Regular GTX670	Palit GTX670 JetStream
Core clock	915 MHz	1006 MHz
Boost clock	980 MHz	1085 MHz
Memory clock	1502 MHz	1527 MHz

 

 

Anyways, I was right about my overclocking mileage. I couldn’t reproduce the results Wizard got in his review. After a lot of driver crashes, I managed to find the max clocks. Stress testing apps like 3DMark11 or Heaven benchmark are no use. Both were stable at clocks which were not stable in Crysis 2 or BF3. (I had to play through Crysis 2 once again to find out my max clocks.)

 

Note: For a comprehensive Kepler overclocking guide, visit here.

 

So, this is where I am at now.(BTW, I use EVGA PrecisionX for overclocking the card.)

 

	Regular GTX670	Palit GTX670 JetStream	Overclocked
Core clock	915 MHz	1006 MHz	1076MHz
Boost clock	980 MHz	1085 MHz	1155MHz
Memory clock	1502 MHz	1527 MHz	1700MHZ

 

It’s not a shabby boost because it is already factory overclocked, but it is not amazing either. People who bought Gigabyte and Asus are seeing much higher overclocks in general, but that doesn’t mean I would be so lucky. I should be happy with what I got.

 

BTW, it is a decent memory overclock, but memory clock hardly affects the performance. I am sure it only resulted in… like… 100 3DMark11 points up from stock clocks.

 

Finally, this is how the overclock affected the 3DMark11 scores. (btw, this is only Windows 8, in case you didn’t figure it out from the title bar of the GPU-Z screenshot above.)

 

Stock clocks

Overclocked clocks

I believe I can break 9500 because the Physics Score when overclocked is 100 points lower than when I ran it at stock clocks. Benchmarks are weird stuff!

Edit:

This is the highest score I have managed to get. But it is not stable in games. This is with a +130MHz overclock + 1.175V GPU voltage set in PrecisionX.