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Overclocking 7870 Hawk (Low OC Limit, High Voltage)

Tags:
  • Overclocking
  • Core
  • Graphics Cards
  • Memory
Last response: in Overclocking
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June 18, 2014 9:40:36 AM

Hello Everyone,

I have had my 7870 hawk for around a year now and am starting to really want to overclock this thing higher than I currently can. I am running at 1250 on the core, and 1450 memory. The Problems I have arise when I try to push it more than these. Both I am using 1.35v on the core, and 1.7 on the memory on air. Whenever I oc, I always have fans on high and usually run 59c on core, 45 c on memory, 58 c on vrms.

Whenever I try to overclock it past this, I will get some bsods, which don't make sense because I noticed that people were able to achieve1400 on air on the core, much less than what I am currently achieving. I suspect this to be the psu being the cause, but check my specs and someone tell me:

Modded Dell XPS 8500
Core i7-3770
Radeon 7870 Hawk
4 DiMM 16gb Ram
40 Gb Sata SSD
2x 1tb HDD in raid 0
PCIE x 1 Sata expansion Card
80 mm case fan
120 mm case fan
460 Watt Dell PSU with dedicated 12v rail.

The PSU calculators said that they recommended a 450 watt psu when I put in the radeon 7950 (to simulate a higher power consumption due to overclocking) so I don't understand how this could be a result of my power supply, but that is the only component left that I can believe is the cause of the crashes and instability when I have a higher overclock at such high voltages.

More about : overclocking 7870 hawk low limit high voltage

a b K Overclocking
a b U Graphics card
a b } Memory
June 18, 2014 9:52:46 AM

Not all graphics card, processors, and memory overclock the same, its a matter of luck if you get a good overclocking chip or not.
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June 18, 2014 10:10:56 AM

I realize that, but many people were able to get 1400 on the core no problem. The only thing that limited them is the temperature limits they were willing to hit with air. I know there are different limits, but that seems awfully low for 1.35v on the core. Many were actually able to achieve 1200 without changing the voltage.
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