Overclock.net › Forums › Graphics Cards › Graphics Cards - General › Case Study: ATI HD 5800 cards and 120Hz
New Posts  All Forums:Forum Nav:

Case Study: ATI HD 5800 cards and 120Hz

post #1 of 5
Thread Starter 
Hello everyone ,

I have HD 5870's in CrossfireX and a 120Hz monitor from Asus. I conduct a lot of tests on different types of hardware and I noticed something really interesting. No pictures unfortunately but you will have to take my word for it.

For the tests I will be using my Sig Rig at 4.20 Ghz Turbo for all cores in order to ensure both cards are being fed properly and have 99% usage while gaming consistently. I have HIS Modified Cooler (AC Accelero Xtreme) on one HD5870 (bottom) and The custom Gigabyte cooler on the other (top).

For test 1, I will be using the Dual DVI cables provided with the monitor for full 120Hz support. I will be running the cards at 120Hz while gaming.

For test 2, I will be using the Phillips 1.3 HDMI cables for video and sound (not 120Hz capable). I will be running the cards at 60Hz while gaming.

In order to ensure that no funny temperature business occurs when the GPU's are being stress tested. I will monitor the temps via GPU-Z and Afterburner's OSD.

I will be testing Bad Company 2, Unigen Heaven Benchmark and Call of Duty: Black Ops. All resolutions at 1920X1080, All at maximum DirectX the games/synthetic tests support.

The settings for Bad Company 2. All high effects, LOD, Textures, HBAO on, Vsync off, 4XAA, 16xAF, DX11

The settings for Black ops. All high, Shader Warming Enabled, Vsync off, DX9

The settings for Unigen Heaven, DirectX11, High Shaders, Normal Tessellation, 4xAF, 0xAA

The results:

Test 1 (120Hz)
Bad Company 2 FPS: 130 Average, Max 200, Minimum 90
Temperatures at load: Arctic Cooling Card: 51C @ 60% fans, Gigabyte Cooling: 75C @ 75% fans

Test 2 (60Hz)
Bad Company 2 FPS: 180 Average, Max 200, Minimum 110
Temperatures at load: Arctic Cooling Card: 43C @ 20% fans, Gigabyte 66C @ 55% fans

Test 1 (120Hz)
Black Ops FPS: 80 Average, Max 130, Minimum 63
Temperatures at load: Arctic Cooling: 48C @ 50% fans, Gigabyte 63C @ 68% fans

Test2 (60Hz)
Black Ops FPS: 97 Average, Max 153, Minimum 78
Temperatures at load: Arctic Cooling: 38C @ 20% fans, gigabyte 57C @ 55% fans

Test 1 (120Hz)
Unigen FPS: 54 Average, Max 91, Minimum 34
Temperatures at load: Arctic Cooling: 48C @ 43% fans, gigabyte 58C @ 64% fans

Test 2 (60Hz)
Unigen FPS: 71 Average, Max 104, Minimum 46
Temperatures at load: Arctic Cooling: 44C @ 20% fans, gigabyte 56C @ 55% fans

Image Quality

Test 1 (120Hz): Colors appear more vibrant due to the Dual DVI cable
Test 2 (60Hz): Colors are bland relative to test 1.

Note: idle temps are 38C and 40C for bottom and top @ 60Hz
idle temps are 40C and 43C for bottom and top @ 120Hz

After-thoughts:

Damn it looks like 120Hz really heat up the 5870's. I looked at the manuals for both my cards and they actually rated to run up to 85 Hz even though AMD pushed their 120Hz support. If your wondering about my temps. My ambient room temperatures rated by my digital thermometer says 24C. I checked this throughout the test and it remained the same. I have a lot of fans and everything in my case runs quite cool except for the cards. I have a client coming to take a look at both of them today. I am going to replace these with a GTX 570 SC as I really do not game that often. Please comment and tell me what your opinions are.

Thanks for reading
Edited by .Cerberus - 6/13/11 at 1:17pm
post #2 of 5
TL;DR.

Yeah.
Son of a Bridge
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.2ghz | 1.24v Asus P8P67 EVO [B3 Revision] Sapphire HD6870 1GB GDDR5 @ 1ghz Core 4GB Kingston HyperX DDR3 1600mhz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar P7K500 500gb 16MB Cache SATA II SATA LG DVD burner Windows 7 Ultimate x64 Acer LCD 17" 1280x1024 
PowerCaseMouseMouse Pad
Corsair TX650 Modded regular case X7 X-760H 2000 DPI N@NO 
  hide details  
Reply
Son of a Bridge
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600k @ 4.2ghz | 1.24v Asus P8P67 EVO [B3 Revision] Sapphire HD6870 1GB GDDR5 @ 1ghz Core 4GB Kingston HyperX DDR3 1600mhz 
Hard DriveOptical DriveOSMonitor
Hitachi Deskstar P7K500 500gb 16MB Cache SATA II SATA LG DVD burner Windows 7 Ultimate x64 Acer LCD 17" 1280x1024 
PowerCaseMouseMouse Pad
Corsair TX650 Modded regular case X7 X-760H 2000 DPI N@NO 
  hide details  
Reply
post #3 of 5
Good tests... I didn't think the FPS would make a difference between the two... As the 60hz should technically 'limit' the frames...
I will be doing some myself when I grab a 120HZ...
Gamer
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 @ 4GHZ Asus P6X58D-E 2X EVGA GTX 970 SC w/ACX 2.0 Cooler 6GB Corsair XMS3 CAS 7 1600Mhz 
Hard DriveCoolingOSMonitor
2X OCZ Vertex 30GB RAID 0 Corsair H100 Win 7 Ultimate 64-bit S23A950D + 55" LED 240Hz 
KeyboardPowerCaseMouse
Logitech G710+ Corsair AX 1200 Corsair Carbide Series Air 540 case Razor Deathadder 3500dpi 
  hide details  
Reply
Gamer
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 @ 4GHZ Asus P6X58D-E 2X EVGA GTX 970 SC w/ACX 2.0 Cooler 6GB Corsair XMS3 CAS 7 1600Mhz 
Hard DriveCoolingOSMonitor
2X OCZ Vertex 30GB RAID 0 Corsair H100 Win 7 Ultimate 64-bit S23A950D + 55" LED 240Hz 
KeyboardPowerCaseMouse
Logitech G710+ Corsair AX 1200 Corsair Carbide Series Air 540 case Razor Deathadder 3500dpi 
  hide details  
Reply
post #4 of 5
Thread Starter 
60 does limit the frames visually, 120Hz looks a lot smoother. However the cards can produce more fps when the monitor is at 60Hz simply because they dont have to display 120 frames per second on the screen as opposed to 60
post #5 of 5
Well I know V-Sync limits it to 60 FPS which will draw less from power the card... I am still confused because I would think the cards would still be pushed harder at higher frames even though the monitor can't physically output that many frames and leads to tearing and such...
Gamer
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 @ 4GHZ Asus P6X58D-E 2X EVGA GTX 970 SC w/ACX 2.0 Cooler 6GB Corsair XMS3 CAS 7 1600Mhz 
Hard DriveCoolingOSMonitor
2X OCZ Vertex 30GB RAID 0 Corsair H100 Win 7 Ultimate 64-bit S23A950D + 55" LED 240Hz 
KeyboardPowerCaseMouse
Logitech G710+ Corsair AX 1200 Corsair Carbide Series Air 540 case Razor Deathadder 3500dpi 
  hide details  
Reply
Gamer
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 @ 4GHZ Asus P6X58D-E 2X EVGA GTX 970 SC w/ACX 2.0 Cooler 6GB Corsair XMS3 CAS 7 1600Mhz 
Hard DriveCoolingOSMonitor
2X OCZ Vertex 30GB RAID 0 Corsair H100 Win 7 Ultimate 64-bit S23A950D + 55" LED 240Hz 
KeyboardPowerCaseMouse
Logitech G710+ Corsair AX 1200 Corsair Carbide Series Air 540 case Razor Deathadder 3500dpi 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Graphics Cards - General
Overclock.net › Forums › Graphics Cards › Graphics Cards - General › Case Study: ATI HD 5800 cards and 120Hz