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MSI R7970 TF 3GD5/OC BE Reviews? - Page 18

post #171 of 320
Most of them are 50-60% ASICs FYI, they might be screamers. I owned a Dual-X 7970 and it was 3x louder than this MSI.


I have noticed that... Low ASIC = More coil whine
Edited by SLK - 5/11/13 at 7:31pm
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post #172 of 320
TSM should know quite abit about this ASIC stuff and i'm surprised he didn't chip in.

From my understanding it really isn't an accurate metric to completely discredit a cards potential on. There are many lower ASIC cards that OC just as high as higher quality ASIC cards. Also higher ASIC cards tend to run alot hotter than low ASIC cards even when both are at the same voltage but i think this may be due to the high ASIC cards having better leakage and holding more of that voltage in. Interesting to see soo many 50-60%s though, i thought the majority of 7970s were in the 70% range anyways i also heard that the GHz bios renders ASIC calculations useless and will report cards to have a higher leakage (lower ASIC) then they really do because they are programmed to run at a certain voltage regardless of what the chip actually needs and this messes up the GPU-z calculation.

Another thing to note is that 7970s are very temperature sensitive. I think the threshold is 70c or something like that but basically once you cross that you need alot more voltage to get or maintain higher overclocks. This is why soo many water cooled cards are well in the 1200Mhz range.

Anyways i feel your pain with overclocking duds lol, I'm still trying to find how high my card will go but without VRM heatsinks i can't really increase the voltage too much (this is a powercolor card) so i settled on 1.188mv @ 1150Mhz/1375Mhz(will change this soon). If the GTX780 is priced as badly as the titan then i will invest more time and money into this card but if it's priced as it should be then back to the green team lol. I go where the powah is biggrin.gif
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post #173 of 320
Quote:
Originally Posted by SLK View Post

Quote:
Originally Posted by iamhollywood5 View Post

SLK said he heard Diamond 7970s were supposed to be the highest binned reference cards, to which you replied "I can't say that on record" - Idk, the way you said it just sounded like you knew something about Diamond cards that most people didn't. Just read it wrong.

Anyway, it does make sense that with a less-effective cooler, they need to have less leakage.
Coil whine is really annoying but honestly I'd put up with the coil whine if I could run 1200Mhz on air cooling...

Crazy how you had the lowest ASIC TF3 in this thread and you ended up with the best OC'er. Not saying the two are completely unrelated but it does show that it's not the end-all-be-all factor. Anyways, congratz on a good score, here's to hoping my replacement is better than my original!


Its been the record that the Diamond 7970s are the highest binned, I don't have proof of that but these cards have been out for quite a while to make that determination. How about I buy one and find out perhaps?

You don't have proof because there is no proof. There is no way to bin a card for overclocking without first investing the money to put the card together, then for a person to overclock the darn card. That's not how the binning process works. There are no lab monkeys overclocking with AB to go yea, we found a gold card cha ching!

The chips are binned on the silicon level for voltage vs leakage at X (stock) frequency. The thing I like about reference cards is that they have to be binned within the advertised TDP envelope, which means they have to be of a certain asic/leakage level to meet that envelope. This is in direct contrast to boost cards which disregards everything because the voltage is locked regardless of asic %. Where voltage is locked, the reference card's voltage scales in relationship to its asic %.


Quote:
TSM should know quite abit about this ASIC stuff and i'm surprised he didn't chip in.


It's gets rather tiring repeating myself over and over.
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post #174 of 320
Hmm I have a couple of these cards. I couldn't control the voltage at all with the current version of msi afterburner. I tried version 3 beta 9 and that seems to work.
post #175 of 320
Thread Starter 
Quote:
Originally Posted by SLK View Post

I think I will sell this 7970 first before I get the diamond.

Let me know if you actually do wanna sell it. i might be interested, purely because I know it can do 1200Mhz on air at a reasonable voltage, and that's all I'm asking for on these cards.
Quote:
Originally Posted by tsm106 View Post

This is in direct contrast to boost cards which disregards everything because the voltage is locked regardless of asic %. Where voltage is locked, the reference card's voltage scales in relationship to its asic %.

What do you mean by locked? You mean the voltage cannot be changed, or do you mean stock voltage is always pinned at 1.256v on every GHz Edition card?

Also, have you thought about writing up a dedicated thread explaining your understanding of ASIC % that you can simply link people to when they ask for a deeper, more accurate explanation of it? Or have you done this already?
Edited by iamhollywood5 - 5/11/13 at 11:37pm
post #176 of 320
Thread Starter 
double post.
Edited by iamhollywood5 - 5/11/13 at 11:38pm
post #177 of 320
Been following this thread for a while since I was interested in the model and despite people saying it didn't seem like an amazing card, I let myself get tempted by it due to liking the cooler and having a preference for MSI over the other options I had at the time. Since I got this card and "managed" to get 1200MHz as well on core I figured I'd share the info I gathered.

1200/1600 on air (TF3 cooler)



Anything past 1200 core seems to be leading into artifacts. According to MSI Afterburner, the Core Voltage was at 1.275 while GPU-Z was showing 1.244 on average (Stock shows as 1.256 on AB and 1.181 average on GPU-Z). VRM temps went up to 71C/64C.

ASIC: 64.4%
post #178 of 320
Thread Starter 
Quote:
Originally Posted by Nsan1ty View Post

Been following this thread for a while since I was interested in the model and despite people saying it didn't seem like an amazing card, I let myself get tempted by it due to liking the cooler and having a preference for MSI over the other options I had at the time. Since I got this card and "managed" to get 1200MHz as well on core I figured I'd share the info I gathered.

1200/1600 on air (TF3 cooler)



Anything past 1200 core seems to be leading into artifacts. According to MSI Afterburner, the Core Voltage was at 1.275 while GPU-Z was showing 1.244 on average (Stock shows as 1.256 on AB and 1.181 average on GPU-Z). VRM temps went up to 71C/64C.

ASIC: 64.4%

Interesting. Nice hitting 1200Mhz. So you're saying you manually set VDDC to 1.275 and GPU-Z was reading 1.244 after Vdroop? That's very little Vdroop - mine would drop to 1.22v under load when I set it to 1.3v in AB.
post #179 of 320
On average yes, that's what I've noticed. I think the lowest I've seen was 1.238v or something around those lines.
post #180 of 320
try running 3DMark 11. Heaven and Valley seem to be very easy on overclocks.
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