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7950 Vapor X Voltage Locked? - Page 74

post #731 of 1056
Quote:
Originally Posted by Fulvin View Post

I got mine today, the vapor-x with 8+8 pin, and i can adjust voltage with trixx and it works like a dream. The vdroop however is terrible. When set to 1.25v, it drops to around 1.17~1.18v. Despite the vdroop i can do easily 1150Mhz and i feel like it has plenty headroom to go with. I recommend disabling the IGPU as i feel like it interfered the voltage adjustment but now i got it working fine after disabling it.

ASIC is 70% which seems like a perfect sweetspot. Heres my 3dmark11 result with stock CPU and GPU oc to 1150 with stock memory.

congrats. how are your core and VRM temps under load ?
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post #732 of 1056
Quote:
Originally Posted by raghu78 View Post

congrats. how are your core and VRM temps under load ?

Fan set to auto, 65c and VRM's around 70c, after looping Heaven for 5-10 mins. They might rise from that over longer periods but not too much, maybe +5c max.
post #733 of 1056
Quote:
Originally Posted by Fulvin View Post

Fan set to auto, 65c and VRM's around 70c, after looping Heaven for 5-10 mins. They might rise from that over longer periods but not too much, maybe +5c max.

very nice. it looks like there are some changes to the 8 + 8 version as they seem to run cooler than the 8 + 6 version. maybe more power phases which allows for lower temps. with a custom fan profile you could bring temps lower. upto 50% fans the vapor-x fans are ok. above that they tend to get loud.
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post #734 of 1056
Can you adjust memory voltage on vapor-x? TriXX 4.6 doesn't have the option. Default memory voltage is set to 1.6V.
post #735 of 1056
Quote:
Originally Posted by SonDa5 View Post

ARe you runnning ATI flash from bootable USB drive? Or are you runnin git in Windows (winflash)?

I used the dos bootable usb stick method to flash my bios. Everything appeared to have worked apart from the bios version seeming to be the same when looking in gpuz
post #736 of 1056
Quote:
Originally Posted by Fulvin View Post

Can you adjust memory voltage on vapor-x? TriXX 4.6 doesn't have the option. Default memory voltage is set to 1.6V.

memory voltage control has been removed in trixx 4.6 . you could try earlier version. but frankly its not needed. the HD 7950 has massive bandwidth. you can easily get memory to 1400 mhz at stock memory voltage which should be enough.

https://www.sapphireselectclub.com/ssc/TriXX/TriXX.aspx
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post #737 of 1056
Memory overclocking is pretty pointless, 20MHz on Core is worth 300-400MHz on memory when it comes to FPS.

So just push it to 1400-1500 or something that you can with the stock voltage, no point trying to push it more.
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post #738 of 1056
Quote:
Originally Posted by nuthead53 View Post

I used the dos bootable usb stick method to flash my bios. Everything appeared to have worked apart from the bios version seeming to be the same when looking in gpuz

Double checked by flashing the bios again and it has definitely took, as it shows you old and new.

I'm now using: 113-210p2hy-v0a (file 21020CH0.V4A that atiflash uses)
my old one when I started was: 113-210p2hy-v02

I have the 6+8 board ( PM: 299-2E210-001SA ) and got the bios from Sapphire.

Can't adjust vddc any more though....... really annoying.
post #739 of 1056
Quote:
Originally Posted by Fulvin View Post

Fan set to auto, 65c and VRM's around 70c, after looping Heaven for 5-10 mins. They might rise from that over longer periods but not too much, maybe +5c max.

Please tell me Fulvin, I have same card as you do. Do you have any coil whine when playing games ? In the menu's and such? Mine is at 1200mhz and well the coil whine is more then when I lowered it.
Will let it run like that for the coming night. Hope it goes away. biggrin.gif
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post #740 of 1056
Well what is this? When Crysis 3 shows the logo's at start up I always had the whining. Now I didn't? Might be because I had it running for 3h yesterday in the menu? Will do it now again. Still get some whining when your in the loadout menu.

Nevermind, I just remembered that I put a framerate cap on the card trough MSI. So that's why I don't get whining.
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