4 Radeon 5830s?

[Chick]

Hi, I'm about to join the mining craze and just wanted to know if this is a good system for $827 bucks. I could probably overclock each of the 5830s to reach 300 mil-hash/second. Which gives me a 1.2 bill-hash/second system.

Will a 950 watt power supply do?

[Freakin]

What are the other specs?

I think it's a pretty good system for $827.  5830 is a great card for the value.

They pull about 200W (from what I've read), so with overclocking 950W is probably doable but doesn't leave you much wiggle room.

i got my cards running in windows @ 306MH/s without any problem

[airdata]

What are you using / doing to get that speed on them?  I have some in the mail now.  Thanks.

[Freakin]

What are you using / doing to get that speed on them?  I have some in the mail now.  Thanks.

Win7 64-bit
Phoenix with Phatk

Trixx overclocked the cards to 990/330 at stock voltage

-v VECTORS BFI_INT FASTLOOP=false AGGRESSION=12 WORKSIZE=256

[lonestar]

which motherboard?

[SgtSpike]

What are you using / doing to get that speed on them?  I have some in the mail now.  Thanks.

Win7 64-bit
Phoenix with Phatk

Trixx overclocked the cards to 990/330 at stock voltage

-v VECTORS BFI_INT FASTLOOP=false AGGRESSION=12 WORKSIZE=256

Do you have them crossfired?  If not, how did you get Trixx to overclock all of the cards?

[Chick]

Haha, that's just great. I was just about to buy them and they went out of stock...

[lemosax]

I just built two of these systems, so this may be helpful for you:
MSI 890FXA-GD70 with Sempron 140
CORSAIR 950TX P/S
HAF-X Case with 1 additional 200mm top fan, 1 additional 140mm inside
4 Saphire 5830 GPUs
1 7200 RPM HD

Overclocking the GPUs to 950MHz Core, 300MHz Memory results in 288Mhash/sec.

Power draw is 668 Watts while hashing, even with fans set at 100%.  At least according to the Kill-A-Watt.

[Freakin]

What are you using / doing to get that speed on them?  I have some in the mail now.  Thanks.

Win7 64-bit
Phoenix with Phatk

Trixx overclocked the cards to 990/330 at stock voltage

-v VECTORS BFI_INT FASTLOOP=false AGGRESSION=12 WORKSIZE=256

Do you have them crossfired?  If not, how did you get Trixx to overclock all of the cards?

Sorry, not crossfired.  They are individual cards in non-dedicated machines.  I have one in my desktop, one in my media server and one in a temporary machine that is waiting for the proper RAM to be sent...

[Chick]

I just built two of these systems, so this may be helpful for you:
MSI 890FXA-GD70 with Sempron 140
CORSAIR 950TX P/S
HAF-X Case with 1 additional 200mm top fan, 1 additional 140mm inside
4 Saphire 5830 GPUs
1 7200 RPM HD

Overclocking the GPUs to 950MHz Core, 300MHz Memory results in 288Mhash/sec.

Power draw is 668 Watts while hashing, even with fans set at 100%.  At least according to the Kill-A-Watt.

I got the XFX 5830s from Tiger Direct. Do you think an antec 750watt PSU would work?

[sirky]

I would run a little higher than that. That seems to be cutting it close.

[Chick]

I would run a little higher than that. That seems to be cutting it close.

850watt?

[kr105]

Yesterday i saw some 5830 on ebay for under $150, now they are all gone! Only $180+ remain

[bcpokey]

I would run a little higher than that. That seems to be cutting it close.

850watt?

I'm glad to see someone not looking to immediately buy 1000Watts+ for no reason. First things first, "xxx watt" is not the only factor. There are plenty of "850 Watt" power supplies out there that will almost 100% for sure die a gruesome death running 4x 5830s.

I would recommend an 850Watt PSU not because it's necessary, but because unless you know enough about power trimming, it might become necessary. Get something simple like a http://www.newegg.com/Product/Product.aspx?Item=N82E16817139022 and you will be golden. It's pretty cheap for what you get. You can get cheaper but you'll need to do research.

[bcpokey]

Yesterday i saw some 5830 on ebay for under $150, now they are all gone! Only $180+ remain

Don't buy 5830s for $150, that's a bad bad deal. You'd be better off buying 6870s for around that price. 5830s are only sought after because they retail for ~$100.

[Freakin]

Or go with something like an Antec 900W.

Antec are reliable and have great warranties
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371050

[BitCointransfers]

I'm running a box with 4 x 5830 using quality cooler master 850W Silent Pro Supply. No probs

[Chick]

I would run a little higher than that. That seems to be cutting it close.

850watt?

I'm glad to see someone not looking to immediately buy 1000Watts+ for no reason. First things first, "xxx watt" is not the only factor. There are plenty of "850 Watt" power supplies out there that will almost 100% for sure die a gruesome death running 4x 5830s.

I would recommend an 850Watt PSU not because it's necessary, but because unless you know enough about power trimming, it might become necessary. Get something simple like a http://www.newegg.com/Product/Product.aspx?Item=N82E16817139022 and you will be golden. It's pretty cheap for what you get. You can get cheaper but you'll need to do research.

Thanks, I know Corsair makes quality PSUs.

Ooh, the free 2 day shipping trial is very nice!

[Chick]

Yesterday i saw some 5830 on ebay for under $150, now they are all gone! Only $180+ remain

Don't buy 5830s for $150, that's a bad bad deal. You'd be better off buying 6870s for around that price. 5830s are only sought after because they retail for ~$100.

Bought them from TigerDirect because I can get two $30 rebates.

Plus, they each come with a game code worth $20!

Guess I'm going to keep one of the codes to myself and sell the other 3.