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21  Bitcoin / Mining / Re: Must have tool for multi-gpu/cpu windows miners! on: June 16, 2011, 04:29:43 AM
The latest version of GUI Miner has built in affinity options.  Windows 7 64-bit, Cat 11.5 and Stream 2.4 on my rig makes each miner use a "fake" 100% CPU on all cores.  Despite plenty of complaints this bug has still not been fixed in poclbm/phatk/etc.  When I set all my miners to a single core in GUI Miner I use less power and generate less heat (on the remaining cores).

its more a drive bug / feature on ATI's end I believe.
22  Other / CPU/GPU Bitcoin mining hardware / gpu bracket? on: June 16, 2011, 04:23:29 AM
I don't have enough room on my motherboard, or even in my case, for a 3rd, and possibly 4th, video card.
My plan is to use riser cables, but still not sure how I can secure the card. I'd prefer to build some sort of bracket to hold it, and prefer that it could be put in the case somewhere as well. It's wide enough that it they can probably sit on the case's side panel when it's closed up.

This is my hybrid gaming rig, so I'd prefer it all be closed up, otherwise would just leave them out in the open.

Anyone got any suggestions or advice?
23  Other / CPU/GPU Bitcoin mining hardware / Re: DVI / VGA Dummy Plug Thread on: June 14, 2011, 11:24:57 PM

I used that guide, though I used 75 ohm resisters, which people in that thread said worked. Mine works fine.
24  Bitcoin / Mining / Re: 6950 Non-reference card OC, Flashing and tweaking thread on: June 14, 2011, 10:34:49 AM
I've got 3 of the powercolor 1gb 6950s and have had no luck in unlocking the shaders. I've tried varios methods, which look like they work, but they remain locked. Even when I load up the flashed bios in RBE, it says that the shaders are unlocked, but they aren't 8(

Would love to find out what works on these cards.

ps, no doubt this should be in the hardware forum!
25  Other / CPU/GPU Bitcoin mining hardware / Re: PCIE splitters on: June 13, 2011, 08:50:03 PM
I got a replay to my quote request from them finally :

Quotation (YYYYMMDD-XX) (Prices in USD)


SKU                       Item                                                    Qty       Unit Price          Total Price


SKU-040-01     Flexible x1 PCI Express 3-Way Splitter   1  $ 135.20            $ 135.20

                            (power from host card)

Freight              Shipping and Handling                                                            $ 79.86


Seems outrageously expensive, especially on the shipping and handling. Have not been able to find anywhere else that sells them. Might still be cost effective though compared to buying a 2nd system.

26  Other / CPU/GPU Bitcoin mining hardware / Re: PCIE splitters on: June 13, 2011, 08:14:00 PM

PCIe splitter, not power splitter.

plug into 1 pcie slot, connect 2 or 3 GPU's to it.
27  Other / CPU/GPU Bitcoin mining hardware / Re: PCIE splitters on: June 13, 2011, 08:34:05 AM
He is talking about PCIe Splitters, i.e., a PCIe x16 to 3 PCIe x1 splitter. The example post was in Pics of your mining rig. The guy was trying to hook 6x5870 on once board with x16 to 3-x1 splitter. He didn't manage to get it too work instead just went with 2 motherboards with 3 cards each.

Thanks, I'll do some reading of that thread. Do you know if it was specifically the splitter he was having problems with? in the post I was thinking of, the guy did have it working, so maybe it was different?

Certainly increases the possibilities if you could split up each slot into multiple cards. Otherwise it's just extender cables, though it doesn't look like I can get them locally at all, Aus, so have to wait weeks on delivery 8(
28  Other / CPU/GPU Bitcoin mining hardware / Re: PCIE splitters on: June 13, 2011, 07:54:29 AM
you sure? don't see any on his site or in his main post
29  Other / CPU/GPU Bitcoin mining hardware / PCIE splitters on: June 13, 2011, 06:00:19 AM
I remember reading a post about someone that used a pcie splitter to connect 3 GPU's to a single PCIe slot, but can't find it again.

Does anyone know how successful this is, and where I might be able to buy such splitters?
30  Other / CPU/GPU Bitcoin mining hardware / Re: GUI mining - now with Phoenix/phatk and ufasoft on: June 13, 2011, 05:54:29 AM
I had guiminer to auto load on windows startup and the miners to be autostarted.
This generally resulted in a hardlockup on booting up, so had to turn off the autostart option on the miners.
Is there something I should do to avoid this?
Alternatively, Is there a feature I'm missing to set a delayed autostart for the miners? ie after 1 min from guiminer loading they start up?
31  Bitcoin / Mining / Re: underclock memory on: June 10, 2011, 10:37:46 PM
Is it possibly to keep a main card at higher memory and other cards at lower memory? I'm putting a gaming / mining rig together and I want one card able to game, but the other 2 will be dedicated to mining.
32  Bitcoin / Mining / Re: Why would you 'underclock' your GPU memory> on: June 10, 2011, 10:34:00 PM
Mostly a heat issue, some people also report gains in hashing by reducing memory clock, but it depends on the cards. Some cards get worse with reduced memory clocks.
33  Bitcoin / Mining / Re: YA rig question - gaming / mining on: June 08, 2011, 11:55:46 PM
Any comments or suggestions at all?

A solid 1000w power supply should be enough. OCZ or CORSAIR are all good selections.

thanks, though the silvertone 1200watt gold is signifantly cheaper then the corsair 1000 that I can get in my area, and the reviews I've checked out suggest it's a good brand.
34  Bitcoin / Mining / Re: YA rig question - gaming / mining on: June 08, 2011, 10:08:44 PM
Any comments or suggestions at all?
35  Bitcoin / Mining / Re: YA rig question - gaming / mining on: June 08, 2011, 10:30:43 AM
Couple more general issues, sorry for the bumping, want to keep them all together rather then start new threads.

Is UPS a good idea? Seems like they can get very expensive and not sure what size I would need, and wether the more affordable one, 1-$200 are sufficient for this system and possibly 1 other smaller one I would like to put on it.

Also, my plan was to have 2 of the cards dedicated to mining and the 3rd to gaming and mining. Anyone know how the gaming will be with that 3rd miner turned off but the other 2 still running in the background?

36  Bitcoin / Mining / Re: YA rig question - gaming / mining on: June 08, 2011, 07:35:49 AM
Anyone else got comments before I start pulling the trigger?

I decided to go with the Silverstone Strider 1200W Gold PSU, and
Antec 902V3 case which has 8 exp slots instead of 7 that my earlier one had.

I like the idea of having plenty of headroom after already blowing one PSU this week, but just having room to expand more would be good as well.

37  Bitcoin / Mining / Re: YA rig question - gaming / mining on: June 08, 2011, 04:54:11 AM
I did have the thought of 1 good card for my gaming, 2gb 6950, and go with something more cost effective for the other 2, but can't get any 58xx cards where I am at all, so those aren't really much of an option.

likewise don't have best option in PSU's. Seems like the decent brands like Corsair / Antec only go up to 750, though there is a corsair tx850.
This is why I was thinking 2x PSUs might be better, especially since it will get me enough 6pin plugs for all the cards.
38  Bitcoin / Mining / YA rig question - gaming / mining on: June 08, 2011, 04:33:54 AM
I was planning on buying a gaming rig in the near future, but after hearing about bitcoin, decided to change it so that it could do mining as well.
The basic system is n i5-2500k,

on a Asrock Z68 Extreme4 motherboard,

8 gig G.Skill Ram 1600

1 SSD, 1 5400 sata drive and a dvd burner.

The case I was planning on going with is a Antec 300 illusion

Originally when I was going for gaming it was going to be a midrange graphic card and PSU to match.

With mining though, I was starting to think maybe 3x 6950 but I have no idea how much PSU I would need, and don't know if they will all fit in the case and on that motherboard.

Can anyone sugguest what PSU I would need, or if I should use 2 PSU and if so will they slot into that case or will I need one that supports 2 PSU?
Alternatively, if there a better combination of video cards to use with a different case or motherboard?

As I said, primarily I want it for gaming, so don't want to deviate from the base system too much, but want to add on better mining ability, which could then be sold off when the bubble burst and still leave me with a gaming rig Wink


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