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Not very impressed with BFG6800GT Overclockability
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Cdubneeddeal
Diamond Member
Sorry for my remarks. I guess I haven't had enough Tequila 🙂
overclocking is always Your Mileage May Vary.
heat is a factor
power (both quality as well as voltage) is a factor
the particular chip itself is a factor.
and the difference between 370mhz (bfg OC) and 400mhz (ultra) is a couple fps. it certainly won't make any difference you can 'feel' when playing a game. mine bfgOC runs stable at 400-410/1200, but honestly it makes such little diffrence that since upgrading drivers (which removed coolbits) i haven't bothered running it beyond stock speeds.
heat is a factor
power (both quality as well as voltage) is a factor
the particular chip itself is a factor.
and the difference between 370mhz (bfg OC) and 400mhz (ultra) is a couple fps. it certainly won't make any difference you can 'feel' when playing a game. mine bfgOC runs stable at 400-410/1200, but honestly it makes such little diffrence that since upgrading drivers (which removed coolbits) i haven't bothered running it beyond stock speeds.
I don't have student loans... the government is paying me to go to school 😀. Have fun with your overclocking guys. I just want to say that for those who say or think that OCing something is a hobby, YOUSA CRAZY! OCING IS THE ART OF TEH DEVIL! IT KILLED MY 9600SE!!!! 480/500 with stock cooling massacred its sacred PCB!! Rest in piece...
Massive Coronary
Junior Member
I am highly upset myself. My X800XT PE won't OC at all. As soon as I hit find max core on ATI tool it artifacts. No lie, that is the truth.
The thing I am lying about is being upset since I was only checking to see if it "WOULD" OC. It won't. Not one mhz. I do believe Sapphire locked it for one reason only. It runs fine in overdirive. If I take overdrive and turn it off the card will NOT OC to 521 mhz.
How dare Sapphire take precautions on my behalf. Wait, maybe they are protecting my $450 investment.
Good job Sapphire. 😀
The thing I am lying about is being upset since I was only checking to see if it "WOULD" OC. It won't. Not one mhz. I do believe Sapphire locked it for one reason only. It runs fine in overdirive. If I take overdrive and turn it off the card will NOT OC to 521 mhz.
How dare Sapphire take precautions on my behalf. Wait, maybe they are protecting my $450 investment.
Good job Sapphire. 😀
HardWarrior
Diamond Member
Some things I've learned about the BFG 6800 GT OC:
1. Of the two cards I've had (1 RMA), both didn't seem very capable of dealing with heat. The first was air-cooled with the dual-fan cooler that came with the unit. It would driver-overclock to 405\1060, but wouldn't run stable without a fan pointed at it. In all it didn't seem to function to well above 54c and would artifact and cut out. On water the new card hovers around 45c idle and never breaks 50c load, so far its running VERY well. Also, and I'm not sure this is an issue, but the card they sent back had the OEM cooler instead of the proprietary BFG cooler
2. In terms of power requirements, the first card I had didn't SEEM to get enough juice from a shared molex. The two SATA drives on the same line MAY have been an issue, either in terms of load or interference. The card I nave now is on a non-shared molex, and again, is running just fine.
1. Of the two cards I've had (1 RMA), both didn't seem very capable of dealing with heat. The first was air-cooled with the dual-fan cooler that came with the unit. It would driver-overclock to 405\1060, but wouldn't run stable without a fan pointed at it. In all it didn't seem to function to well above 54c and would artifact and cut out. On water the new card hovers around 45c idle and never breaks 50c load, so far its running VERY well. Also, and I'm not sure this is an issue, but the card they sent back had the OEM cooler instead of the proprietary BFG cooler
2. In terms of power requirements, the first card I had didn't SEEM to get enough juice from a shared molex. The two SATA drives on the same line MAY have been an issue, either in terms of load or interference. The card I nave now is on a non-shared molex, and again, is running just fine.
Zebo
Elite Member
Just remeber every 10C yeilds about 5% of stock.
Example:
Say with POS box cooler load is 70C and max core OC of the card is 380.
60C will yield you 380 + ( 350 x .05) = 397
50C will yeild you 380 + (350 x .1) = 415
and so on.. Now you see why people water/phase/LN2 their stuff. heat causes leakage which fails to OC. More volts is always a bad idea IMO.
Example:
Say with POS box cooler load is 70C and max core OC of the card is 380.
60C will yield you 380 + ( 350 x .05) = 397
50C will yeild you 380 + (350 x .1) = 415
and so on.. Now you see why people water/phase/LN2 their stuff. heat causes leakage which fails to OC. More volts is always a bad idea IMO.
fishmonger12
Senior member
why do you care about overclocking it right now anyway?
i thought the whole reason you spend that much on a card is so you wont have to overclock. there's no reason to overclock a card that isn't showing it's age on anything. it's dumb. just voids the warranty, and gives you a performance increase you will never be able to see, because by the time your card becomes outdated it will be fried by the overclocking.
i thought the whole reason you spend that much on a card is so you wont have to overclock. there's no reason to overclock a card that isn't showing it's age on anything. it's dumb. just voids the warranty, and gives you a performance increase you will never be able to see, because by the time your card becomes outdated it will be fried by the overclocking.
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