hmm that sucks. i alost just killed a brand new rosewill PSU within just 5 minutes with only a single 5830 plugged in. which PSU was it that died on you?

i don't know how you manage to find all this info on him, but thank you. i'll try to use this to maybe call his local authorities. so far there has been 9 people that said they have been scammed by this guy. if you also have been scammed by him and do not wish it to be public, then please PM me instead.

any of you got your money back yet? who paid through dwolla? i requested his dwolla account to be locked, but dwolla declined that request until another person filed a dispute against him on dwolla. i'm not sure who that person was, but his account is now suspended, so if you paid through dwolla, please file a dispute. i think even if you paid with BTC, try to file a dispute through dwolla anyways because he converted that BTC to dollars and moved it into dwolla. if he scammed you by BTC, you MIGHT be able to get your money back, but in dollars instead of BTC, so try to file a dispute anyways.

with new drivers, you're now able to use up to 8 GPUs

so you're forcing the buyer to also buy the other 9 chasis because you need to get rid of them? this is your problem, you shouldn't be putting it on the buyer unless they really want it also. you're already pushing it forcing them to also get the complete rig instead of just the two 6990, but 9 other empty chases... seriously?? sell the rig separately from the 9 empty chasis, you will sell them faster. you even said yourself that the chasis can easily be sold on craigslist, so you do that, shouldn't be the buyer's problem.

Vladimir, based on the picture, each GPU is working at ~341mhash/s and temps range from 67C - 79C. although how long it has been running before taking that pic makes a huge difference because it takes time for the room temperatures and case temps to reach thermal equilibrium

the MSI 890FX-GD70 is a popular one on this forum because it's very versatile. can hold a max of 6 cards with extender cables, or 4 cards sandwiched right on top of each other, or 3 double slot cards with a space in between for breathing.

just curious, is a new 6950 1gb a reasonable trade for a used 5870 1gb?

so are you suggesting that it's a bug in both GPU-Z and afterburner sensors? because in my screenshot, they both agree with each other, so i doubt they're both wrong.

it seems like it's a hit or miss with the cards you get. from what i've seen so far, there has been more people unable to underclock the memory to the 300mhz range than people that have successfully done it. just like with flashing a 6950, not all of them are flashable because they're hardware locked. and the ones that could be flashed, not all of them are able to unlock extra shaders to a 6970. it's just the luck of draw, but you make it seem like anyone not being able to underclock the memory is really that incompetent. it's pretty straight forward to do, no? just like with the HD5xxx series, all you do is pull the memory slider lower or enter values in small increments. however, on all the ones i've tried, it just reverts back to default memory clocks. this was done on all updated software versions and verified with different sensors. i looked at the power consumption and temps, and it indeeds corresponds to stock memory speeds.

btw, your link to legitreviews.com proves nothing. ya sure the core and memory underclocks iteself when idle, but once you put a load on it, they both default back to normal clocks. that article did NOT manually  test a memory underclock at load like you said. you should try reading that article yourself before making a reference to it.

is this guaranteed to be unlockable?

eh... how about some pictures and some live videos?

i'd send it back. rosewill is neweggs own brand, they do not make the PSUs but just rebrands them from other OEMs. you're not going to know who the OEM is unless you open it up, which will void the warranty. and there's not enough reviews on these rosewill brands so you can't really just look up the OEM.

i recently also bought a rosewill PSU from newegg (although the 600w model), used it for literally 5 minutes with just ONE 5830 plugged in... and poof... PSU died and won't turn back on. do yourself or the potential buyer a favor and just return it.

although i would have no personal use for something like this, nevertheless it's still pretty cool. after reading it, it seems like the average computer joe can put something like this together

don't worry, looks like this guy is legit. ebay member since 1996. but still, a picture with the item and your name on a paper should clear all doubts

http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=dlasher

what drivers and OS are you guys using?

works in any slot, but some motherboards will require you to short the two presence pins together if you're going to put a x1 cable into a x16 slot

/thread

so you verified that it underclocked fine? or did it not work also?

i verified this independently from each other by having only either trixx or afterburner open, and it's the same results. what card are you running? and are you able to take a screenshot of the sensors?

for all you guys that are claiming that you underclocked the memory of your HD6000 series cards to lower temps and power consumption, well i just found out the hard way that the memory on these cards do not actually underclock. you may be able to manually set the memory speed lower in MSI afterburner or sapphire trixx, but the settings don't actually "stick". you can actually verify with various sensors that these settings don't actually work. the HD5xxx series cards underclock wonderfully, but there's something about the 6xxx that won't allow this. i have tested this with 6570, 6970, and 6950, they all can't underclock the memory.

refer to his example screenshot i took of the new 6950 i just bought. you can see in the GPU-Z info that default memory is 1250mhz, and supposedly the speed is currently unclocked to 300mhz. you can see in sapphire trixx and the setting panel of MSI afterburner that i set the memory clock to 300mhz (after unlocking the config file of course). now, if you look at the GPU-Z sensors tab and the hardware monitor graph of the MSI afterburner, you can see that the memory is still actually 1250mhz, regardless of what i manually set the memory to. so on these 6000 series cards, you can overclock the memory, but not underclock it.

if you underclock your 6000 series, please check your sensors again to verify this, and post back here whether this is true or not. and i challenge anyone to prove me wrong, or find a workaround for this "lock".

lol thanks for the clarification, that's what i figured based on the context.

wait, so if a PSU is either underpowered or bad quality, it will lower your mhash/s?? i thought that your video card will work or it doesn't if there's not enough juice to it, instead of working but lower the mhash/s. is this confirmed?