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7950 Vapor X + two 8 pin connectors + mem voltage + VRM cooling


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#1 Stealth3si

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Posted 10 March 2013 - 03:36 PM

For those who have recently have bought the Sapphire HD 7950 Vapor X with two 8 pin connectors, I want to get an idea of their VRM cooling capabilities.
 
I heard mixed reviews about VRM cooling and it seems it has to do with either the cooler/VRM design, and/or the low stock memory voltage 1.5v. Supposedly there should be a new vBios that changes the memory voltage to 1.6v for better vrm cooling but that is questionable.
 
Do you know what are the stock memory voltages on them? is it 1.5v or 1.6v?
 
If not, what are your mem clocks and VRM temps?
 
Also, were you able to change the GPU voltage using Trixx 4.6.0 in Bios1? Because I heard the card has LL to lock the voltage and the new Trixx can disable that.

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#2 ccokeman

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Posted 10 March 2013 - 05:37 PM

I never measured the voltages for the memory on these cards. Depending on the version of TRIXX or Afterburner you may see some voltage locks. 


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#3 Stealth3si

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Posted 10 March 2013 - 06:04 PM

Edit: I was just doing some research and I think I might go with the Sapphire Dual X HD 7950 boost rev 3 instead. Vapor-X seems to have dubious issues surrounding voltage locks and VRM components/heating/cooling.


Antec 300 Illusion Case
Antec NEO ECO 620C
ASRock Z97 Fatal1ty Z97 Killer
Intel 4690k OC'd to 4.50Ghz @ 1.280V
Phanteks PH-TC14PE CPU Cooler
G.SKILL Ares Series 8GB 1866Mhz CL9 1T
MSI GTX 980 Ti Gaming 6G 1500 Core/8000 mem @ 1.224V
Asus Xonar DX & Beyerdynamic DT770 Pro 80 Darth'd w/ O2 Desktop Amp
Samsung 840 Pro 256GB, Samsung 830 256GB, WD Caviar Green 1TB/2TB, WD My Passport 2TB x 6
Logitech Wireless K800 Kb & Logitech Wireless G700 Mouse
Dell S2740L LED IPS 27" 1080p
Windows 7 Ultimate x64 Service Pack 1

#4 ccokeman

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Posted 10 March 2013 - 06:33 PM

IT all comes down to the specific card really on the Vapor-X cards. The Dual X is not a bad choice any which way you look at it!

 

Be sure to post up the clock speeds you get from it?  


Processor Intel Core I7 4790K  4.4Ghz
Memory Corsair Vengeance 16GB 2666Mhz
Motherboard Z97i
Graphics  GTX TitanX
Power Corsair AX 1200,
Monitor LG W3000H, ASUS VG236 x 3
Cooling Corsair H90

HyperX Savage 240GB SSD, 3TB Seagate
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#5 Stealth3si

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Posted 10 March 2013 - 08:36 PM

I see no reason to post clock speeds. I'm going for 1100/1450 - 1200/1600. Not really competing with anyone but if I got questions or whatever I'll post what I got.


Antec 300 Illusion Case
Antec NEO ECO 620C
ASRock Z97 Fatal1ty Z97 Killer
Intel 4690k OC'd to 4.50Ghz @ 1.280V
Phanteks PH-TC14PE CPU Cooler
G.SKILL Ares Series 8GB 1866Mhz CL9 1T
MSI GTX 980 Ti Gaming 6G 1500 Core/8000 mem @ 1.224V
Asus Xonar DX & Beyerdynamic DT770 Pro 80 Darth'd w/ O2 Desktop Amp
Samsung 840 Pro 256GB, Samsung 830 256GB, WD Caviar Green 1TB/2TB, WD My Passport 2TB x 6
Logitech Wireless K800 Kb & Logitech Wireless G700 Mouse
Dell S2740L LED IPS 27" 1080p
Windows 7 Ultimate x64 Service Pack 1

#6 ccokeman

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Posted 11 March 2013 - 04:30 PM

Its not about competing its about getting a feel for where yours will overclock so that I have a frame of reference greater than 3 Vapor-X or Dual-X 7950's will do.

 

Good luck in your overclocking.


Processor Intel Core I7 4790K  4.4Ghz
Memory Corsair Vengeance 16GB 2666Mhz
Motherboard Z97i
Graphics  GTX TitanX
Power Corsair AX 1200,
Monitor LG W3000H, ASUS VG236 x 3
Cooling Corsair H90

HyperX Savage 240GB SSD, 3TB Seagate
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