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SAPPHIRE AMD Radeon HD 6870 1GB GDDR5 PCIE

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Old 03-09-12, 10:45 PM Thread Starter   #1
prozaC
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SAPPHIRE AMD Radeon HD 6870 1GB GDDR5 PCIE


Hi

I have SAPPHIRE AMD Radeon HD 6870 1GB GDDR5 PCIE two Crossfired together.
I want to overclock both cards. anyone know the process of overclocking these graphic cards? i need specifics thanks -prozaC
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Old 03-10-12, 07:00 PM Thread Starter   #2
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can anyone help me? i just want to overclock this card!! other forum sites with good information would be good or anyone with experience with same graphics card.
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Old 03-10-12, 09:17 PM   #3
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https://www.sapphireselectclub.com/ssc/TriXX/TriXX.aspx

Sapphire has their own OC'ing software, and it works well. Give that a go.

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Old 03-11-12, 03:38 PM Thread Starter   #4
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i tired to over clock my 6870 to 1000/1200 no change in voltage with 50% fan and it blue screened on me. what is the probleM

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Old 03-12-12, 10:28 PM   #5
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It can't handle those speeds at stock voltage. Back-off a bit, say 950/1100 and test that.

Reference speeds is 900/1050. I used ATIFlash on a DOS Bootable USB Thumb Drive and an OC BIOS from TechPowerUP to flash both my 6870's to 940/1100.

Here is a list of Sapphire's BIOSs.

http://www.techpowerup.com/vgabios/i...ace=&memSize=0

You could try flashing the 970/1150. I thought about trying it on mine but haven't gotten around to it yet. If you notice in the details, they did bump up the voltage from 1.175 to 1.188.

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Last edited by ch0b1ts; 03-12-12 at 10:41 PM.
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Old 03-13-12, 08:27 AM Thread Starter   #6
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I changed it to 950/1100 with stock voltage and 50% fan speed I am using shappire trix works great did not benchmark or anything and does not make it see anymore different. Thanks for ur help ;]
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