Overclock.net › Forums › Graphics Cards › AMD/ATI › 7950 Vapor X Voltage Locked?
New Posts  All Forums:Forum Nav:

7950 Vapor X Voltage Locked? - Page 58

post #571 of 1056
I have a probleme with my 7950 overclocked ... especially with the memory clock ... 1450 Mhz is the maximum I can set, I tried it with the MVDDC at 1500 mv and even at 1600 mv but every time I set a higher frequency than 1450 Mhz, it crash.
But there is more, currently, I overclocked my card to 1200Mhz / 1450Mhz (VDDC at 1225 mv and MVDDC at 1600 mv) and after few time of gaming (randomly from 20 min to 3 hours), the game freeze and I have to close it (without reboot). I tried some other frequency and voltage like 1100 Mhz / 1350 Mhz but the result is the same. The only time when my game didn't crash is when I use the stock clock.

Oh and this happens only in game, I tried some benchmark and stress test like Heaven, 3D Mark, Kombustor, ... and there is no probleme with my current clock
And the temperature never exceed 60°C.
Edited by Lordryder - 2/1/13 at 1:07pm
post #572 of 1056
It could be the memory.. mine is stable at 1900 until it starts to heat up. Since its connected to the core HS on the Vapor-X, its almost always hotter than the core. Over 60c it's not rock solid stable at 1800.

Considering your memory seems to be a weak set, try dropping it down to 1200.
post #573 of 1056
Hmmm I think my whole computer is broken .... I tried a few other test with only 3D mark ... and every time, if the VDDC and MVDDC are changed, the test stop and the voltages are back to their stock value ...
And another thing, I tried a 3D mark test with the stock clock and I had "P5968 with AMD Radeon HD 7950(1x) and AMD Phenom II X4 965" ... I think that a 7950 (even with a AMD 965) should give more than 6000 points
post #574 of 1056
I have a few related questions that i'd like clear out before pulling the trigger on my 7950.

Is it just Vapor-X in Sapphire's range of 7950's that is locked? Can you flash it? If not, then which of their cards are unlocked?

How high does the reference board card allow in terms of voltage?

Sorry if these questions were answered previously in the thread, but i didn't go through all the pages. I was getting the Gigabyte at first, but i found VaporX at the same price which made me curious.
post #575 of 1056
@Lordryder: Run heaven with these rules:

Render: Direct X 11
Mode: 1680x1050 fullscreen
Shaders: high
Textures: high
Filter: trilinear
Anisotropy: 16x
Occlusion: enabled
Refraction: enabled
Volumetric: enabled
Anti-Aliasing: 8x
Tessellation: extreme

And post results.

@Fulvin: No, and some other cards [I've read, at least] are completely locked. Flashing.. to a 7970? No, wont work.

Plenty high as long as you keep the VRMs cool. Maye I dont understand your question. Going high wont damage it any more than it would on another 7950.

And the Gigabyte WF3 is the one I've read is now "hardware" locked, but I may be wrong.. just be cautious of that.
post #576 of 1056
The Sapphire HD7950 Vapor-X isn't voltage locked to those wondering.

If you want to OC you just need to put the power limit on +20 (max) and then change the Cor and Memory clocks.
I got the card today and I also was unable to OC it at first. I increased the Core and Memory but when you would launch a bench it would first go to like 1050 in my case and then back to 850.

When I changed the power limit in MSI afterburner I got the card to run constant at 1100 core and 1500 memory smile.gif

GPU works like a charm. Maximum temperature with a heavy OC is around 64c. If you are going to OC then expect about 20fps more in some cases!

Happy with my purchase smile.gif. Only little thing I don't know about is the strange noise I hear. Seems like coil whine but not exactly. Only happens in for example the Crysis 2 main menu. During gaming itself the noise is gone.
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
Gaming System
(19 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K Asus P8P67 REV 3.1 Sapphire HD7950 Vapor-X (OC) Corsair Vengeance 
Hard DriveHard DriveHard DriveOptical Drive
Samsung HD103SJ Samsung HD321KJ Samsung 840 Samsung SH-222AB 
CoolingOSMonitorKeyboard
Corsair H80i Windows 7 Ultimate 64bit Samsung 2333T Logitech G110 Gaming Keyboard 
PowerCaseMouseMouse Pad
XFX 750W Black Edition CM Storm Enforcer Razer Deathadder 2013 Razer Goliathus Speed 
AudioOtherOther
Asus Xonar DG CCFL Caselight (Blue) Cooler Master MegaFlow 200 Blue LED  
  hide details  
Reply
post #577 of 1056
Quote:
Originally Posted by Derpinheimer View Post

Plenty high as long as you keep the VRMs cool. Maye I dont understand your question. Going high wont damage it any more than it would on another 7950.

And the Gigabyte WF3 is the one I've read is now "hardware" locked, but I may be wrong.. just be cautious of that.

How high is the highest attainable hardware limited vcore on a reference 7950 board? 1.35V? 1.25V? If you own unlocked card, set the slider to max in AB / Trixx and post results. And what about the VaporX which sits on 7970 board?
edit: this doesn't really matter, i'd just be curious to know.

The newer Gigabytes come with the new Ghz bios, with voltages ramped (and locked) up, to 1.2xV, but i don't think they're HW locked, i could be wrong though.
Edited by Fulvin - 2/1/13 at 3:00pm
post #578 of 1056
Quote:
Originally Posted by Derpinheimer View Post

@Lordryder: Run heaven with these rules:

Render: Direct X 11
Mode: 1680x1050 fullscreen
Shaders: high
Textures: high
Filter: trilinear
Anisotropy: 16x
Occlusion: enabled
Refraction: enabled
Volumetric: enabled
Anti-Aliasing: 8x
Tessellation: extreme

And post results.

@Fulvin: No, and some other cards [I've read, at least] are completely locked. Flashing.. to a 7970? No, wont work.

Plenty high as long as you keep the VRMs cool. Maye I dont understand your question. Going high wont damage it any more than it would on another 7950.

And the Gigabyte WF3 is the one I've read is now "hardware" locked, but I may be wrong.. just be cautious of that.

With the stock clock : http://img11.imageshack.us/img11/1256/screenkui.png
post #579 of 1056
Update from Happy 7950 Vapor-X Crossfire owner:thumb.gif

7950 Vapor-X Rocks :-)

My X5878 3Dmark11 score is Number 1 in Valid Results :-) :




......... and with help from Martin from HWINFO I got HWINFO setup so it now shows both stock GPU VID voltage (1.250) - which is useless - and stock actual voltage (0.997 / 1.110) - which is very usefull:



(From BF3 Metro 64 player map)


PS:
Just to try other settings than stock voltage allows me (which is 1100 mhz/ 1500 mhz ) - I tried Trixx 4.4.0 b and I ran gpu at 1200 mhz in BF3 Metro Multiplayer with no problems at 1.2 v (didnt try lower)....... BUT - unlike you guys I am a chicken biggrin.gif so I will stick with the 1100 mhz/1500mhz at stock voltages.
Conclusion: my ASIC 88.1 and ASIC 88.2 cards could probably have been better used/tested by Derpenheimer or the other insane overclockers like him in this forum :biggrin.gif

PPS:

I could get much better temps on card 1 if I could use pci-e lane 1 & 5 instead of 1 & 4 on my Z68 Extreme7 Gen3...... but my Crossfire-Bridge is only 9 cm and I need at least 11 cm as the Vapor-X design makes the Cross-fire bridge stand in a "bow".mad.gif


PPPS:

660ti and Vapor-X Size compared - Size matters:p

post #580 of 1056
A little confused and looking through old threads to work this out.
Can anyone tell me what version card I have and point in me in the direction of the latest Bios for

PM: 299-2E210-001SA
bios version: 113-210p2hy-v02

Thanks
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 7950 Vapor X Voltage Locked?