A bit off topic but I picked up a GTX 970 (Gigabyte Windforce 3x) only to realise the TDP of this card is not 145W but 250W. With stock BIOS, 100% power target and +160 Mhz core OC it draws 234 watts from the wall mining groestl (which seems to be the hungriest non-scrypt algo) on a 80+ gold PSU. It seems its efficiency plateaus around 40-60% power target limit depending on algo:
I have the same card and it draws 170 from the wall on Quark. I'm not sure why it would draw 250w, it's the same architecture, unless they boosted the core voltage (the vcore is the same as my other cards). Are you using a wall meter? I noticed there is a lot of headroom as far as the TDP on the cards, but they don't draw that much, at least mine don't.
It's an OC version, should have added (GV-N970WF3OC-4GD). The voltage is 1.212 and with +160 Mhz it boosts to 1476 Mhz.
I measued with a watt meter at the wall. Same card draws 242.97W in a stress test in this review:
http://www.tomshardware.com/reviews/nvidia-geforce-gtx-980-970-maxwell,3941-12.htmlSo from Gigabyte both the OC and Gaming editions have a factory increased max TDP of 250 watts. Not sure if that makes me happy though. I wonder what a 145w TDP 970 does but it seems most people have the 250W cards.
I checked mine and this does indeed seem true. Mine are running at 190w at the wall with a 190mhz OC. Not as bad as yours, but still not as good as my other cards. Also 40% TDP they're pulling 85w and around 10000MH on quark.
They must've increased the TDP limitation on cards due to yield issues (970/980 had yield issues when they first came out). That would explain a lot and also make me regret buying these over 750ti if this is indeed true. Playing the lottery on cards has never been my strong suit.
My Asus cards don't seem like a 145w either, they sit around 175w with a 220mhz OC. Cards always seem to max out around 1500Mhz without a core voltage increase.
I don't understand why people get mad at wolf0.
He has always developed opensource projects, along with some private. I do as well. There is nothing wrong with it.
There is everything wrong with people hiding markets and making back room deals. This single handedly fucked AMD small miners that couldn't pay for his kernels and/or didn't know they existed.
Yeah, sorry bensam1231, but you are basically whining.
Here is a summary:
bensam1231 - I don't like what you (Wolf0) decided to do. Waaah!
Pretty much, I didn't like someone jamming their dick in my ass, as would any AMD miner that spent a bunch of money on cards just to get fucked by him. Most people didn't even know this happens because his kernels were kept hush hush or they're called 'private', when really he's selling them.
Imagine if SP decided he was done with you guys and decided to make his kernel completely private. Improved the hashrate by 3x at the same wattage so all your cards essentially don't make any money and if you want his new miner he charged you 5BTC for it. That means only big miners who have a lot of hash would be able to afford it and if you're a small time miner, you wouldn't and essentially get pushed out of the market since coins use a pie distribution. If someone is using the same card and they have a better kernel, they take your earnings to make up for it.
But yeah, he isn't actually going to tell you he's selling it and you get to watch your profits dwindle into nothingness and wonder why mining has gotten so hard all of a sudden. Wolf0 actually tried to justify this at one point as 'people using graphics cards for space heaters' when I opened a thread on this.
You guys are full of shit if that wouldn't piss you off.