Topic: HD7770 & HD7750 mining thread - page 3. (Read 49894 times)

It would not increase hashrate dramatically.

I Got 2 7770 working at 1100 doing 180-200 MHash/s each one at 70C

did you guys make it working on a linux distro ? i cant install drivers make a black screen before install

Got my MSI 7750 in the mail today.

Gets about 125.5 Mh/s @ 830/1125 using DiabloMiner.  GPU temperatures are at 49°C with a fan speed of 46%.

136.1 Mh/s @ 900/800.  GPU temps reach 50°C with a fan speed of 46%.

Not bad for something that uses the PCIe slot for auxillary power.

Yeah it is idiots like you that think RMA is the universal solution that is driving up the GPU prices for EVERYONE else when the manufacturer has to take into consideration this variation of theft / revenue loss from people claiming DOA or RMA when they destroy card on purpose.

Once you OC you should have no warranty but AMD is too dumb to properly implement this so once you OC it is recorded in BIOS or something ... or at least that's how it should be done.

Just RMA it back to newegg and tell them I no know what happen. What's that you say? Overclocking? Me? Nawww

Got to 1300 MHz but had to push voltage to 1.28, which really isn't worth it anymore. Reverting back to 1200MHz @ stock

Well AMD has shrunk the line up a bit so we'll have to wait and see how the HD 7800 cards do and their prices.

It's probably going to be four months before AMD is putting out steady driver updates for GCN.

Next on Bitcoin talk, how to let all the magic smoke out of your components and turn them into doorstops. 

I hear ya  at least the MHs/Watt is alright I guess.. Maybe in a year when the price is around $110 they'll be a better option.. I'm hoping for some fairly serious kernel improvements as well, maybe slightly better drivers too, but you can't expect too much improvement in that field from AMD these days.

You could always try 1500MHz @1.4v lol, haven't tried pushing that hard yet 

I am working on my 7770 as we speak.  Getting very similar numbers OP is.  NOT happy at all.  Glad I kept all my new 5850s.

Sorry for the delay on this, the following is assumed when taking these measurements:

7770HD is GPU 3 in my system, with no monitor attached, I am assuming 5 watts idle board power (IBP) (supposedly 3 watts), thanks to AMD Zero Core
Memory is not under-clocked, I wasn't able to use ATI tray tools on this GPU since it is not GPU 0 or the same type of GPU as 0, 1125MHz GDDR5, you could probably shave off a few watts if you downlcoked it to 300.
165 Watts total system power idle, from the plug, measured with Kill-a-Watt
System is using an 80-plus bronze certified PSU

Drum roll please:
Stock voltage and clocks: 1,000MHz @ 1.175v, ~150MH/s using Phoenix 2.0 (Diablo is slightly faster) 165watts > 211 watts (rounded up .5 watts) + 5watt IBP = ~50 Watts, or 3MHs/Watt with current drivers and kernels
1250MHz @ 1.215v, 184MH/s using Phoenix 2.0 (Diablo is slightly faster) 165 Watts > 225 watts (rounded up 1 watt) + 5 watt IBP = ~65 watts, or 2.83MHs/Watt with current drivers and kernels.
Not too shabby if you can overlook the high $/MHs

Anyone who thinks these numbers are low, consider that with the architectural improvements, the graphics core consumes only slightly more power than the GDDR5 memory would under full load, hence the 80 watt TDP. I wonder if this card will boot without a 6 Pin PCIE connection..

Also note that even with a high fan speed (bought the XFX double fan edition) this card gets rather warm in my server rack with extremly good air flow, hotter than my shader unlocked 6950's do running at 920MHz 
Could it be the die simply dosen't have the surface area to dissipate that much heat into the heatsink? Industrial manufactured diamond-based heatsinks now plz!

you mean gcn. graphics core next.

Well, with my 5750 I can get about 190 Mhashes/sec at 890Mhz/0.98V/65C with cgminer 2.1.2.

What do you expect ?

It has got less shaders.

GCN shaders are not faster than VLIW5 shaders ...

 So, 7770 is 1.5 times slower than 5770?   What a waste of money on this junk.

There was a problem with earlier cgminer releases and the new 12.2 ATI driver release. This should be fixed in cgminer 2.2.7 so this should work with these cards.

I was able to get diablominer working! Stupid me, I had http:// in front of my pool URL, which was causing it not to be able to connect I guess, anyway:

Latest Diablominer as of 2/17/2012, 12.2 with bundled 2.6 SDK, Win7 64bit, clocked at 1230MHz: 183MH/s vs 181 MH/s Phoenix 2.0 with fine-tuned paramaters; will experement with differant paramaters later this evening, I'm pretty sure I can get more MH/s out of it, as diablo defaults to 256 worksize, which is not optimal for 7770. I'll bet I can get at least another 5MH/s out of it with -w 128. Still, I was hoping for 200-220 MH after a 20% OC, which is about what the 6770 gets  

Also, Dia is going to send me an updated kernel for Phoenix 2.0 which isn't available on github; I'm hoping that will work even better as Phoenix 2.0 is already getting almost as much as diablo. Will post results of this as well as power consumtion tests later this evening. Also going to try overvolting and higher OCs this evening too! @1230MHz atm at stock.

Here is you best option. Install the latest 12.2 drivers and use diablominer get the latest one updated yesterday. run with no flags that should do good. (maybe -w 128 might be faster) I have my 7970 on those settings getting 690Mhash each.

I tried diablo which started up on all four GPUs, even recognized the 7770 as Capeverde, but none of my GPUs started hasing, it just idled saying 0.00 MH/s..

cgminer wouldn't start either, saying failed to initialize GPU 0.. not sure how to configure that though really, tried going through this guide that had me install mingw32, and Microsoft SDK and a bunch of other steps, but I still couldn't get it so start..   sorry, still a noob at some of this.

Supposedly DiakGCN kernel with Phoenix works 99% as well as cgminer using diakgcn though, according to Dia who wrote the kernel for both miners.

Will try and post some power consumption rates later today.. I managed to get 1240MHz core on stock voltage though (1.17v), going to try and get 1300< on 1.2v

Hashing at 183MH/s @1230MHz using Phoenix 2.0 running OpenCL kernel.. Anybody have any idea why this kernel would result in better hashrate than diakgcn or phatk2 using the same miner?

Any power consumption numbers yet?

Try DiabloMiner and cgminer because they are the only ones to be working with 7XXX cards.

Report back if you can. Thank you !