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Asus 670 DirectCU II TOP - Page 268

post #2671 of 2680
@ ShangTsung

1. About 70degC iirc.

2. The temperature registered by the core increased by a degree or two but this could be due to the increased case temperature as a result of increased memory chip temperatures, not sure to be honest.

3. The temperature increase when I tested via infrared gun pointed at the chips compared to stock and at 1700 was around the 10-15% mark and at 1800 it was near 20%, what the exact temperature was I can't recall.

4. The memory chips on the core side are cooled directly by the block, the chips on the rear are passively cooled via a back plate and also I added some thermal pads to the underside of these chips so they get some cooling from the water block also.

Before wc the max stable memory clock was +660 resulting in clock 1832 and after wc the max stable was +732 clock 1868. In my case the overclocking was limited by temperature under air cooling since you can see the chips still had more to give when under water cooling. For reference when benchmarking for max overclocks my fan profile was set to 100%.


@ ICJI

The stability problems were rectified in most cases with an official Asus released TOP bios update. If you were to buy the 670 you should still have manufacturer warranty remaining since they come with 3 years and the card has only been released for little over a year.
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post #2672 of 2680
Super jealous of my brother right now. He got a Asus 670 like a year ago and it died on him day one. So he sat on it until recently as he was too lazy/busy to RMA, so I finally RMA for him since I want to try SLI.... He gets an email today saying they are sending him a 680 replacement... blinksmiley.gif Why couldn't have I gotten a 680 when I RMA'ed??? sad-smiley-002.gif
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post #2673 of 2680
Oh boy I hope I get a 680 or at least 4GB 670 when I RMA my DC2.

Tell him he is one lucky guy!
    
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post #2674 of 2680
I have 2 TOO's sitting idle now i went FTW 4'gbs
post #2675 of 2680
Thread Starter 
I am confused as to how this overclocking process works. I increased my clock offset by increments of 20mhz and was checking gpu-z to see my core and boost clock. I eventually had my boost to around 1267mhz....but in the heaven benchmark loop I had going my card was running at around 1215mhz and then spiked to 1347mhz and crashed. How can the card exceed the boost clock I have set? Also, my power usage never goes above 80%, why is that? I see other people hitting like 120% or higher. Can someone explain this to me?

-Fallacy
post #2676 of 2680
I you have the TOP version then you need to download and run the official Asus 670 DC2 Top bios to improve stability before doing anything.

The core has a dynamic boost which can obtain the highest boost value stored in the boost table that is programmed to the bios.
For example my GPU-Z clocks are 1124 and 1202 boost but in the boost table the core frequency goes to 1372 which the card is running at when gaming or benching.
The boost will cause the crash and the max boost value is what you will play attention to in order to find a stable max overclock.
There is a great guide here on ocnet to help you out, I suggest you read it.
If you choose not to read and go about it yourself the core must go up in increments of 13.

Goodluck
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post #2677 of 2680
Thread Starter 
Quote:
Originally Posted by nemm View Post

I you have the TOP version then you need to download and run the official Asus 670 DC2 Top bios to improve stability before doing anything.

The core has a dynamic boost which can obtain the highest boost value stored in the boost table that is programmed to the bios.
For example my GPU-Z clocks are 1124 and 1202 boost but in the boost table the core frequency goes to 1372 which the card is running at when gaming or benching.
The boost will cause the crash and the max boost value is what you will play attention to in order to find a stable max overclock.
There is a great guide here on ocnet to help you out, I suggest you read it.
If you choose not to read and go about it yourself the core must go up in increments of 13.

Goodluck

Hmmm..I remember updating my cards bios like almost a year ago..Is that the bios you are talking about or is there a new one out?

so how do you overclock your card when you can't always see the max boost?

When I first got my card it was boosting to 1280 stock. I haven't changed anything but now it only boosts to around 1137. I don't understand how my cards clock speeds dropped without me changing anything? Maybe the drivers?
Edited by Fallacy - Today at 10:54 am
post #2678 of 2680
The same method of applying an overclock and testing with a benchmark tool until instability is present when you will then step back 1/2/3 steps for your 24/7 clock a[[lies as per usual
If you boost at 1137 stock, apply +26 core you'll boost to 1163, if stable in say Heaven extreme setting then rinse and repeat until unstable.
You should get to +105 core reaching 1242 at max boost before problems will begin.

Boosting values did change with newer driver releases to improve increase stability which resulted in lower max boost, quite a significant drop experienced by some and not so much by others, it was dependent on how good a sample you had. In my case the drop was -13 which meant I just increased the core overclock by 13 to obtained previous max boost with no problems.
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post #2679 of 2680
Thread Starter 
Okay here's an update:

I increased the offset by increments of 26 until I hit +130 and it got through heaven so I bumped it up +13 and this happened half way through.



Even though my boost was increased to 1280mhz, in the heaven benchmark I was running at around 1215 and 1228, until halfway through when it spiked to 1359mhz and died.



Notice that my power usage is only at 80%

Can you interpret this for me?

-Fallacy
post #2680 of 2680
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