Gigabyte 7870 Overclocking Question

[devilhanzou]

I recently replaced my 4850x2 graphics card with a 7870. I love the card but just have a question about overclocking it within the catalyst. With the 4850x2 I could easily max out the core and memory clocks in the catalyst and never had any freezing, overheating etc. The 7870 however is much more touchy I have only been able to increase the card within smaller increments, and its defiantly not a heat problem, and I have 1000 watt power supply so not that either. Is it that the Gigabyte card already comes slightly overclocked? Would there be an advantage to using the Gigabyte, or MSI overdrive programs for doing this? Thanks in advance for any help, and below is a link to the card if you need any info.


http://www.newegg.com/Product/Product.aspx?Item=N82E16814125418&Tpk=7870

 

[lt_dan_zsu]

Those programs have been better at overlcocking in my experience.

 

[cc_moreau_cc]

MSI Afterburner is probably the best overclocking tool on the market. Just curious, what sort of temps are you getting when stressing your 7870? Also, since the card already comes at 1100MHz, either you've gotten a dud that won't go much higher then 1100Mhz in which case really sucks or, you simply have to increase the voltage because you're card might not be stable enough at the speeds you are running.

 

[srafig4]

that's right. Either Gigabyte OC Guru II or MSI Afterburnner is better than catalyst ...

 

[devilhanzou]

MSI Afterburner is probably the best overclocking tool on the market. Just curious, what sort of temps are you getting when stressing your 7870? Also, since the card already comes at 1100MHz, either you've gotten a dud that won't go much higher then 1100Mhz in which case really sucks or, you simply have to increase the voltage because you're card might not be stable enough at the speeds you are running.

Tempature with the fan just at 30 percent GPU AT 1250MHZ and the Memory Clock Around 1350 the card runs around 40-42°c
I am talking about when just putting it to the catalyst max allowed of 1400/1450 I have had some crashes

 

[lt_dan_zsu]

Well duh. You need to up the voltage or lower the clock. Your card is unstable, at those settings. There is also a max that every card will get to no matter the voltage or temp.