Overclock.net › Forums › Graphics Cards › AMD/ATI › 7970 Toxic Edition Memory Wont Overclock
New Posts  All Forums:Forum Nav:

7970 Toxic Edition Memory Wont Overclock

post #1 of 5
Thread Starter 
I have a Radeon HD 7970 6GB Toxic Edition card, and I was only able to overclock it to 1260 mhz core and 1625 mhz memory. I am happy with my core clock that I achieved, but I expected much more from the memory clock. When I have the clockspeeds at 1260/1625, compared to being at 1260/1600, I do get slightly higher average and maximum FPS with the slight memory OC, but even the mininum FPS drops slightly. Does this mean it is even unstable at 1625 mhz? Is it just bad luck with this card to only be able to OC the memory +25mhz? Or is there something I can do to get the memory to OC higher? Help plz.

Edit: Memory was artifacting I had to put it back to 1600mhz, but 1260/1600 was completely stable.
Edited by Ongdanhurchim - 12/9/12 at 9:49pm
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
post #2 of 5
1250 mhz is a very good core clockspeed for HD 7970. Since the TOXIC is specially binned and tested at factory overclock of 1200 Mhz ,most of its clockspeed potential is exhausted. Normally 1300 - 1325 Mhz is the maximum for HD 7970 overclocks.

1600 mhz on memory is ok. but HD 7970 does not require a huge memory overclock as it has plenty of bandwidth. at 1600 mhz it has more than 300 Gb/s bandwidth. thats just insane amount of bandwidth. for a 1080p display you don't need that much. Also because of error correction in GDDR5 memory, overclocking will reduce performance once memory is not able to run stable at desired clocks.
Edited by raghu78 - 12/9/12 at 11:19pm
Fragbox
(14 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i5 2400 DH67BL AMD Radeon HD 6900 Series XFX HD 6950 2GB 
RAMRAMHard DriveOptical Drive
Corsair Corsair DDR3 1333 Mhz 2 GB Corsair DDR3 1333 Mhz 2 GB Western Digital Caviar Green SONY DVD-RW AD-7260S 
OSMonitorKeyboardPower
Windows 7 Professional 32 bit BENQ G2420HD Logitech K200 Seasonic VX550 psu 
CaseMouse
ANTEC 200 V2 Logitech mouse 
  hide details  
Reply
Fragbox
(14 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i5 2400 DH67BL AMD Radeon HD 6900 Series XFX HD 6950 2GB 
RAMRAMHard DriveOptical Drive
Corsair Corsair DDR3 1333 Mhz 2 GB Corsair DDR3 1333 Mhz 2 GB Western Digital Caviar Green SONY DVD-RW AD-7260S 
OSMonitorKeyboardPower
Windows 7 Professional 32 bit BENQ G2420HD Logitech K200 Seasonic VX550 psu 
CaseMouse
ANTEC 200 V2 Logitech mouse 
  hide details  
Reply
post #3 of 5
Thread Starter 
I am happy with my OC, i just find it strange that my max memory OC is the same 1600mhz that the 7970 toxic ships at.
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
post #4 of 5
Quote:
Originally Posted by Ongdanhurchim View Post

I am happy with my OC, i just find it strange that my max memory OC is the same 1600mhz that the 7970 toxic ships at.

you could go for increasing memory voltage. i think msi afterburner has memory voltage control. but its just not worth pushing memory higher. especially at 1920 x 1080. thumb.gif
Fragbox
(14 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i5 2400 DH67BL AMD Radeon HD 6900 Series XFX HD 6950 2GB 
RAMRAMHard DriveOptical Drive
Corsair Corsair DDR3 1333 Mhz 2 GB Corsair DDR3 1333 Mhz 2 GB Western Digital Caviar Green SONY DVD-RW AD-7260S 
OSMonitorKeyboardPower
Windows 7 Professional 32 bit BENQ G2420HD Logitech K200 Seasonic VX550 psu 
CaseMouse
ANTEC 200 V2 Logitech mouse 
  hide details  
Reply
Fragbox
(14 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i5 2400 DH67BL AMD Radeon HD 6900 Series XFX HD 6950 2GB 
RAMRAMHard DriveOptical Drive
Corsair Corsair DDR3 1333 Mhz 2 GB Corsair DDR3 1333 Mhz 2 GB Western Digital Caviar Green SONY DVD-RW AD-7260S 
OSMonitorKeyboardPower
Windows 7 Professional 32 bit BENQ G2420HD Logitech K200 Seasonic VX550 psu 
CaseMouse
ANTEC 200 V2 Logitech mouse 
  hide details  
Reply
post #5 of 5
Thread Starter 
I don't think memory voltage increasing is worth it either, 1600mhz is good enough for me. Thx for help though smile.gif
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
Ongducuchet Comp
(20 items)
 
  
CPUMotherboardGraphicsGraphics
i7-3930k @ 4.9ghz 1.52v Rampage IV Extreme Asus Geforce GTX Titan @ 1176/3402 Asus Geforce GTX Titan @ 1176/3402 
RAMHard DriveCoolingCooling
16gb 2133mhz memory Samsung 830 256gb SSD Koolance 380i Koolance PMP-450 
CoolingCoolingCoolingCooling
XSPC Reservoir Alphacool Nexxos Monsta 480 Radiator 4x Delta 240CFM Fans 10ft Green Tubing 
CoolingCoolingOSMonitor
6x Monsoon Compression Fittings Primochill ICE Coolant Windows 7 Professional 64bit Asus VE247H 
MonitorMonitorPowerCase
Asus VE247H Asus VE247H KINGWIN Lazer Gold Series LZG-1300 1300W Azza Genesis 9000w 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 7970 Toxic Edition Memory Wont Overclock