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7950 Vapor X Voltage Locked? - Page 97

post #961 of 1056
I am not surprised Elpida memory won't go beyond 1415 for me, however, I am happy with my everyday stable overclock of 1150/1400 @ 1.25v/1.6v

I am going to switch BIOS sometime this week and play with 850/1250 BIOS for overclocking.

Yes GPU-Z verified. Always. tongue.gif
post #962 of 1056
Quote:
Originally Posted by SonDa5 View Post

Does somebody know if the Elpida ram has faster timings than the Hynix? My VApor X HD7950 with the slow Elpida memory plays games very well even it is just at 1300mhz.


My Elpida memory doesn't go faster than 1400mhz as well at 1.6V. but I run it at 1300mhz with 1.55v on memory voltage and that is stable and plays games well. Nowhere near as fast as my Sapphire 950mhz Edition HD7950 which can go as fast as 1800mhz on the memory.

Does play well and makes me wonder if the timings of the Elpidas are faster than the HYNIX which could explain why the Elpida doesn't over clock well. Not sure.

I think the heat sink is bad design on the VApor X BOOST. The HEAT sink makes contact with the GPU and the memory and sponges up alot of heat. Better design would be separate heat sinks for the memory. All the heat between the memory and the GPU is just going to sponge up the heat on the heat sink. Poor design IMO.

Yes separate design is superior, if only slightly.. unless the memory were making a lot of heat [like 1.7v/2000], then maybe it cools the memory better than split cooling.. although of course the core gets the extra heat then too.

I think the biggest problem with this cooler is that the vapor chamber is massive and blocks a huge chunk of the exhaust air.

How come no manufacturers have gone with HDT yet? Hasnt that become commonplace for CPU heatsinks by now?
post #963 of 1056
Quote:
Originally Posted by Derpinheimer View Post

Yes separate design is superior, if only slightly.. unless the memory were making a lot of heat [like 1.7v/2000], then maybe it cools the memory better than split cooling.. although of course the core gets the extra heat then too.

Sorry but I don't know where I read this but I read some where here at OCN that the memory IC are not rated to run as hot as the GPU is. So if the GPU is running hot the heat from the GPU will effect the cooling ability of the memory and the memory may even heat up more.


I know that when I water cooled my Sapphire 950mhz Edition HD7950 my memory picked up around 200mhz of stable over clocking speed so cooling off the memory with the water block helped alot.
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post #964 of 1056
Quote:
Originally Posted by SonDa5 View Post

Does somebody know if the Elpida ram has faster timings than the Hynix? My VApor X HD7950 with the slow Elpida memory plays games very well even it is just at 1300mhz.


My Elpida memory doesn't go faster than 1400mhz as well at 1.6V. but I run it at 1300mhz with 1.55v on memory voltage and that is stable and plays games well. Nowhere near as fast as my Sapphire 950mhz Edition HD7950 which can go as fast as 1800mhz on the memory.

Does play well and makes me wonder if the timings of the Elpidas are faster than the HYNIX which could explain why the Elpida doesn't over clock well. Not sure.

I think the heat sink is bad design on the VApor X BOOST. The HEAT sink makes contact with the GPU and the memory and sponges up alot of heat. Better design would be separate heat sinks for the memory. All the heat between the memory and the GPU is just going to sponge up the heat on the heat sink. Poor design IMO.
Are you saying that games run better with your Elpidas @ 1400MHz then your Hynix @ 1800MHz?
If they are, that should become noticeable in some benchmarks? I doubt it. If you actually find your games run better with Elpida @ 1400MHz maybe you have some throttling issue with the other card @ 1800MHz Hynix? Just a thought.

Your theory on the timings are interesting and could actually be true. Those modules are programmable(goes offcourse for both Hynix and Elpida and so on), and the manufacturer could set the timings as they like.
But what benefits would we get from somewhat faster timings in a GPU like this? Could the manufacturer have set the timings higher on purpose, so that we cant reach 1500MHz+?

Would be really interesting so to see some comparison between Hynix at 1400MHz and Elpida at the same rate.

I have the Hynix. And as far as i can tell, both can handle 1.6v. +/- 0.35v.
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post #965 of 1056
Quote:
Originally Posted by Derpinheimer View Post

Yes separate design is superior, if only slightly.. unless the memory were making a lot of heat [like 1.7v/2000], then maybe it cools the memory better than split cooling.. although of course the core gets the extra heat then too.

I think the biggest problem with this cooler is that the vapor chamber is massive and blocks a huge chunk of the exhaust air.

How come no manufacturers have gone with HDT yet? Hasnt that become commonplace for CPU heatsinks by now?

I think you are somewhat right here. You need good airflow to achieve good temperatures with this card. However, i am not certain this has to do with just this card and its design. I think the Windforce from Gigabyte also would benefit from good airflow. Which card wouldn't? A reference perhaps.

Anyway i recently switched from a NZXT H2 to a Antec P280. And i have noticed lower temperatures.
On my NZXT i had 2 front fan(120mm) and 1 rear(120mm), and a special modified side with a 140mm fan, blowing over the side of the card.

Now in my Antec i have the standard fans. 1 rear and 2 top. I also have added 2 more 120mm fans, one in front and another one "in the middle" blowing towards the card. If you are familiar with the P280 you would know what i mean with "in the middle". If not google a picture of it.

I think that middle fan is doing some really good work, temperature drops as high as 10°c on the VRMs is something i have noticed.
So a good case with good airflow is really something that you would like to have, especially with this kind of cooling solutions. I think this goes for the Windforce and MSI solution aswell. Not just this card.

80-85°c is no temperatures for this kind of electronics, in my opinion.
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post #966 of 1056
What voltage do you keep your 2D profile at?
post #967 of 1056
Quote:
Originally Posted by Falcy View Post

Are you saying that games run better with your Elpidas @ 1400MHz then your Hynix @ 1800MHz?
If they are, that should become noticeable in some benchmarks? I doubt it. If you actually find your games run better with Elpida @ 1400MHz maybe you have some throttling issue with the other card @ 1800MHz Hynix? Just a thought.


The Vapor X HD7950 is slower and in benchmarks it trails my faster HD7950 by alot.


In games it plays very well.

Since trying out the Vapor X I have updated my drivers to 13.3 beta and I installed 2 samsung 840s in RAID 0 for my main OS and games.


The Vapor X is gaming very well. I have been winning alot more. Oh I also just did a fresh install of Windows 7. So other factors could be involved for my system feeling so smooth. Another thing is I have a huge UT60 420 radiator being used only on my CPU right now. Maybe my CPU is staying cooler than before and that is helping out as well.
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post #968 of 1056
My dud Vapor X HD7950 is on its way back for return.


I ordered another. Hope the new one has higher ASIC score than 57% anything above %70 would be nice at this point in time considering how low quality the ASIC scores have been popping up with HD79XX cards.
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post #969 of 1056
Quote:
Originally Posted by SonDa5 View Post

My dud Vapor X HD7950 is on its way back for return.


I ordered another. Hope the new one has higher ASIC score than 57% anything above %70 would be nice at this point in time considering how low quality the ASIC scores have been popping up with HD79XX cards.


Cancel that order dude, cuz I have some gold waiting to be sold soon.
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post #970 of 1056
Quote:
Originally Posted by tsm106 View Post

Cancel that order dude, cuz I have some gold waiting to be sold soon.

Sorry man. I really want the Vapor X HD7950 card. Too late. If it don't work out I will return it for a refund. Giving the VApor X HD7950 a fair chance. I figure a second card may be good... if not I will be in the market for another card and maybe I can get some of your gold.
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