Overclock.net › Forums › Graphics Cards › AMD/ATI › crossfire 6850 and 6870 vs single 6950
New Posts  All Forums:Forum Nav:

crossfire 6850 and 6870 vs single 6950 - Page 2

post #11 of 14
Quote:
Originally Posted by Donbuster View Post

I don't see what is so hard about this concept. I don't care about AA. Seriously; I could not care less. Yes it is nice to have, but it's like having a case with quiet fans; nice to have, but not really needed, and certainly not a huge decision point for me. since people seem to not get this concept, I will repeat it once more.

I do NOT care about AA

my priority here is getting good enough frame rates with no visual bugs like holes in models or darkened areas that should not be.


still, the stutter is something to think about, I personally think that VRAM is a hugely overrated and inflated spec, but I will see what all my games tend to max out at.

AA is only one factor (though depending on what level, can be large or small). However your texture settings will also be a large factor. Or do we not care about those settings either?

Also please fulfill your rigbuilder so we can see what your system is, just want to make sure you have a good PSU to power these kind of upgrades
Edited by TheReciever - 11/14/13 at 6:39am
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 900c/1350m 20GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveOS
128GB SSD 1TB 5400rpm 750GB 5400rpm Windows 10 x64  
MonitorPowerMouse
1920x1080 @95hz 150w Corsair M40 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 2670 @ 2.8Ghz m4600 m5100 @ 900c/1350m 20GB DDR3 1333Mhz 
Hard DriveHard DriveHard DriveOS
128GB SSD 1TB 5400rpm 750GB 5400rpm Windows 10 x64  
MonitorPowerMouse
1920x1080 @95hz 150w Corsair M40 
  hide details  
Reply
post #12 of 14
Also remember that while running in CF mode frames may be higher than they actually are.
Jay
(13 items)
 
  
CPUMotherboardGraphicsRAM
FX 8350 4.4Ghz at 1.36v GA 78LMT USB3 Rev 5.0 Sapphire R9 285 OC 16GB Kingston Savage Ram 
Hard DriveHard DriveCoolingOS
1TB Western Digital 500GB Seagate Barracuda Noctua NH-D15S Windows 8.1 
MonitorPowerMouseMouse Pad
Asus MG279Q Fressync OCZ ZS 650 Watt PSU Dragonwar ELE-G9 Dragonwar 
  hide details  
Reply
Jay
(13 items)
 
  
CPUMotherboardGraphicsRAM
FX 8350 4.4Ghz at 1.36v GA 78LMT USB3 Rev 5.0 Sapphire R9 285 OC 16GB Kingston Savage Ram 
Hard DriveHard DriveCoolingOS
1TB Western Digital 500GB Seagate Barracuda Noctua NH-D15S Windows 8.1 
MonitorPowerMouseMouse Pad
Asus MG279Q Fressync OCZ ZS 650 Watt PSU Dragonwar ELE-G9 Dragonwar 
  hide details  
Reply
post #13 of 14
Quote:
Originally Posted by jason387 View Post

In synthetic benchmarks you will get 2x scaling performance but not in real world performance, such as games which matter more. Can you run 3D mark vantage at Extreme mode with 2 6850's at stock?


Dont have the cards any more.
Sold them to fund the 1KW PSU for the 7970 CF.

BC/BF3/BF4
Tom raider
Sleeping Dogs
Metro
All showed really good scaling nearly 100%
Most other stuff was in the 80% scaling range and only ever came across 2 games that should no scaling but those games were running over 100FPS anyway.

Serious sam being the only game I ever played with negative scaling until a driver update came out 3 weeks after I got the game.

And 1GB Vram on them does seriously limit there performance in CF since the Vram doesnt add together to make 2GB its still just 1GB since each card mirrors the same textures on it.
FXAA is about the most AA the cards can handle on 1080.
Had to push 1200MHZ on the Ram to be able to run 2X MSAA at a decent FPS on BF3 since it would half the frame rate compared to it being off.

Never the less they lasted me a long time and with the red mod overclocked to 1020mhz core and 1180mhz memory with a little more voltage on the core.
Pleased I ran them and in the end they did work out as being free since first one payed its self off and left me with enough to get the 2nd from bitcoin mining on it when the price of BTC hit $30 up from the $1 when I started mining on it.
post #14 of 14
Thread Starter 
Quote:
Originally Posted by TheReciever View Post

AA is only one factor (though depending on what level, can be large or small). However your texture settings will also be a large factor. Or do we not care about those settings either?

Also please fulfill your rigbuilder so we can see what your system is, just want to make sure you have a good PSU to power these kind of upgrades
I didn't use rigbuilder, and I'm too lazy to make one, so... specs

gpu- Radeon HD 6850 sapphire (w/overclock to 865 Mhz core clock 1075 mem clock, normal voltage)
psu- 750w coolermaster 80 bronze
mobo- MSI z77a g45 thunderbolt
cpu- intel i5 Ivybridge 3570K
cpu cooler- coolermaster Hyper 212 plus (w/arctic silver 5 paste)
case- Coolermaster HAF advanced 932 full tower blue
ram- g.skill ripjaws 16gb (8gbx2)
HDDs- Main drive: HGST 1 tb 7200 RPM 3.5 inch (its an OEM hard drive, so no clue on the model, the label has it scratched out)
secondary (video recording) drive: WD caviar blue 1 tb 7200 RPM 3.5 inch
tertiary (video recording) drive: 161 GB 5400 RPM WD scorpio blue 2.5 inch
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › crossfire 6850 and 6870 vs single 6950