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HD 6990 to HD 7950/70?

post #1 of 6
Thread Starter 
Its that time again. I can sell my HD 6990 with Water Block ~ 650. I could get a HD 7950 ~ 440+ TAX, or HD 7970 550+ TAX and then ADD 20-30$ for better models like DCII.
I play @ 2560 x 1600 and BF3. No problem with FPS but i just want to try HD 7970 Series. Also how do they OC. I dont see people being to confident about overclocking especially HD 7950.
With both cards hit 1.2Ghz+? Do i need a special card and model to hit those clocks?
Ishimura
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Ishimura
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Silent Knight
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AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
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OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
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post #2 of 6
For >1200 MHz you basically need to be lucky. I can hit that at stock 1175mV, but most cards look like they need >1200mV

As for performance, you'll get very close to a 6990 in benchmarks while having a superior experience because you're rid of microstutter.
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i7-2600k P8Z68-V PRO 2x HD 7970 16GB 1600 MHz 
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180GB SSD 2TB Green spinpoint F3 1TB EK Supreme HF 
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Corsair AX850 Corsair C70 Arctic White Steelseries Xai ASUS Xonar DX 
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i7-3720QM Alienware M14x motherboard Nvidia Geforce GT 650M Intel HD Graphics 4000 
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post #3 of 6
Thread Starter 
How does HD 7950 OC? If there is only 5% difference Clock per Clock i am not spending Extra $120.
Ishimura
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Silent Knight
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Ishimura
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Silent Knight
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
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post #4 of 6
When looking at *OFFICIAL* AMD Radeon HD 7950/7970 Owners Club
It seems the 7950s generally aren't as highly binned as the 7970s, I'd wager there is a higher chance of reaching >1200MHz core @ 1200mV with a 7970 than a 7950.
You should also take note that powertune will be a limiting factor on these cards, I got some throttling even at 1125/1500 (no +20% powertune) before I put this demon under water. Considering the 7970 has a 300W limit at +20% while the 7970 has a 240W limit at +20%, I'd wager you'll be running into powertune issues before you hit the limit on clock scaling.
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CPUMotherboardGraphicsRAM
i7-2600k P8Z68-V PRO 2x HD 7970 16GB 1600 MHz 
Hard DriveHard DriveHard DriveCooling
180GB SSD 2TB Green spinpoint F3 1TB EK Supreme HF 
CoolingCoolingCoolingCooling
MCP355 2x Coolgate 240mm XSPC Dual-bay res Scythe Gentle Typhoon 
CoolingOSMonitorKeyboard
2x EK-FC7970 Windows 7 XL2410T Qpad MK-80 
PowerCaseMouseAudio
Corsair AX850 Corsair C70 Arctic White Steelseries Xai ASUS Xonar DX 
CPUMotherboardGraphicsGraphics
i7-3720QM Alienware M14x motherboard Nvidia Geforce GT 650M Intel HD Graphics 4000 
RAMHard DriveOptical DriveCooling
6GB 1600MHz CL11 Seagate momentus 500GB 7200RPM DVD Alienwarer M14x leafblower 
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Windows 7 Home Premium 1600x900 Alienware bling 
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Main rig
(21 items)
 
Alienware M14x
(11 items)
 
 
CPUMotherboardGraphicsRAM
i7-2600k P8Z68-V PRO 2x HD 7970 16GB 1600 MHz 
Hard DriveHard DriveHard DriveCooling
180GB SSD 2TB Green spinpoint F3 1TB EK Supreme HF 
CoolingCoolingCoolingCooling
MCP355 2x Coolgate 240mm XSPC Dual-bay res Scythe Gentle Typhoon 
CoolingOSMonitorKeyboard
2x EK-FC7970 Windows 7 XL2410T Qpad MK-80 
PowerCaseMouseAudio
Corsair AX850 Corsair C70 Arctic White Steelseries Xai ASUS Xonar DX 
CPUMotherboardGraphicsGraphics
i7-3720QM Alienware M14x motherboard Nvidia Geforce GT 650M Intel HD Graphics 4000 
RAMHard DriveOptical DriveCooling
6GB 1600MHz CL11 Seagate momentus 500GB 7200RPM DVD Alienwarer M14x leafblower 
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Windows 7 Home Premium 1600x900 Alienware bling 
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post #5 of 6
From 6990 to 7970 is no good business... get a crossfier of 7970 and then we can start talking
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My Console Killer
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G. Samsung F3 1TB Windows 7 Ultimate 64 Bits Samsung 17' 
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by Saizer View Post

From 6990 to 7970 is no good business... get a crossfier of 7970 and then we can start talking

I understand performance wise but i upgrade way to often. Having one card its so much easier to sell fast and buy a new one.
Ishimura
(21 items)
 
Silent Knight
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
Case
NZXT Switch 810  
  hide details  
Reply
Ishimura
(21 items)
 
Silent Knight
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
Case
NZXT Switch 810  
  hide details  
Reply
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