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There are several different types of Bitcoin clients. The most secure are full nodes like Bitcoin Core, but full nodes are more resource-heavy, and they must do a lengthy initial syncing process. As a result, lightweight clients with somewhat less security are commonly used.
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MrTeal
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June 06, 2012, 12:08:45 AM |
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1000W is plenty for 4 5850s, but that one is a little sketchy. The OEM is Super Flower, so it could go either way. Only 4 PCIe cables means you'll need 4 Molex to PCIe cables. It's single rail so it will probably work fine, but you might want to spring for a better one if you can afford it.
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SgtSpike
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June 06, 2012, 12:16:11 AM |
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The 5850's really only consume about 150w under full load (at the wall). So, theoretically, you only need 4x150 + say, 50w for the CPU/motherboard idling. 650w, + 20% for some headroom = 780w. This PSU would be a MUCH better option than that 1000w you have listed, even though it's only 800w. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139025That 1000w looks like the type that would only run 600w before keeling over. |
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Coinoisseur
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June 06, 2012, 12:48:13 AM |
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I'd suggest a 850-900W unit, just not comfortable with edging too close to the maximum rating. Besides running at max load can knock a few percent off efficiency.
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SgtSpike
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June 06, 2012, 12:51:37 AM |
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I'd suggest a 850-900W unit, just not comfortable with edging too close to the maximum rating. Besides running at max load can knock a few percent off efficiency.
800w is more than 20% above the estimate current draw... how much headroom do you want??? |
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MrTeal
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June 06, 2012, 01:57:12 AM |
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It's actually a lot more margin than that, as PSUs are rated by their DC output and not what they pull from the wall. A good 800W supply would power those cards without problem; the rig I have my KillAWatt plugged into right now is drawing 330W at the wall with an 80+Bronze supply with two unlocked 6950s at 850/200 which would draw as much or more than a pair of 5830s.
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check_status
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June 06, 2012, 05:29:32 AM |
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With all 4 cards and the board at idle it will consume 160w at the wall, approximately. When mining, OC engine 860 and UC memory 220, draw will be 680-700w at the wall.
Would be best if you chose a single rail PSU and 750w would be a minimum. How efficient a PSU you should get just depends on how much you want to spend, the more efficient the more it will cost.
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abbeytim
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June 06, 2012, 07:16:30 AM |
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also remember when underclocking ram it consumes a little less but your probably ocing the core 2
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tatsuchan (OP)
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June 06, 2012, 12:26:38 PM |
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Thanks for the replies guys! So make sure it is single rail, and you guys ARE NOT willing to risk non-name brand power supplies, correct? Even with bronze ratings/single rail? Also, think a windows 7 machine, single core cpu, 2GB RAM, 1000Watt PSU could run 5 5850 cards?  (don't know if it changes somehow at 5, cause I don't see anything over 4 much) I have a friend with free electric, but they are only able/willing to allow me to run 2 nodes. Wanna get the best bang for buck, but don't have much money. |
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Dargo
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June 06, 2012, 12:48:35 PM |
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Thanks for the replies guys! So make sure it is single rail, and you guys ARE NOT willing to risk non-name brand power supplies, correct? Even with bronze ratings/single rail? Also, think a windows 7 machine, single core cpu, 2GB RAM, 1000Watt PSU could run 5 5850 cards? (don't know if it changes somehow at 5, cause I don't see anything over 4 much) I have a friend with free electric, but they are only able/willing to allow me to run 2 nodes. Wanna get the best bang for buck, but don't have much money. The bottom line is that you want to get a *good* PSU. You probably can run 5 5850s off a good 1000w PSU, but you have to get a good one. A good PSU can run 70-80% of its rated load 24/7, but not a mediocre one. Also, keep in mind that you can undervolt. I'm running 5 5850s now @0.95v. I'm getting a little over 300 Mh/s per card and pulling 540 watts at the wall. If you undervolt, you can get by with this http://www.amazon.com/PC-Power-Cooling-Performance-compatible/dp/B003U29C3Q/ref=sr_1_2?s=pc&ie=UTF8&qid=1338985544&sr=1-2I'm recommending the PC Power and Cooling PSUs b/c they offer great bang for the buck. |
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SgtSpike
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June 06, 2012, 03:54:39 PM |
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Thanks for the replies guys! So make sure it is single rail, and you guys ARE NOT willing to risk non-name brand power supplies, correct? Even with bronze ratings/single rail? Also, think a windows 7 machine, single core cpu, 2GB RAM, 1000Watt PSU could run 5 5850 cards? (don't know if it changes somehow at 5, cause I don't see anything over 4 much) I have a friend with free electric, but they are only able/willing to allow me to run 2 nodes. Wanna get the best bang for buck, but don't have much money. The bottom line is that you want to get a *good* PSU. You probably can run 5 5850s off a good 1000w PSU, but you have to get a good one. A good PSU can run 70-80% of its rated load 24/7, but not a mediocre one. Also, keep in mind that you can undervolt. I'm running 5 5850s now @0.95v. I'm getting a little over 300 Mh/s per card and pulling 540 watts at the wall. If you undervolt, you can get by with this http://www.amazon.com/PC-Power-Cooling-Performance-compatible/dp/B003U29C3Q/ref=sr_1_2?s=pc&ie=UTF8&qid=1338985544&sr=1-2I'm recommending the PC Power and Cooling PSUs b/c they offer great bang for the buck. A good PSU can run 100% of its rated load 24/7. A mediocre one can run 80%, and a really terrible one can run maybe 50-60% before dying on the spot. |
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Turbor
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June 06, 2012, 05:42:43 PM |
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There is nothing wrong with super flower. I use a 650W silver rated unit for my two 5850s. 6 months 24/7 use and not a single issue. Would buy again but in gold or platin  |
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MXRider
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June 06, 2012, 05:56:42 PM |
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1000W is plenty for 4 5850s, but that one is a little sketchy. The OEM is Super Flower, so it could go either way. Only 4 PCIe cables means you'll need 4 Molex to PCIe cables. It's single rail so it will probably work fine, but you might want to spring for a better one if you can afford it.
I'm using Super Flower PSUs and they have been working great so far. Right now I have 4x5870 + 7970 plugged to a 1000W Super Flower PSU. Cards are undervolted and the whole system is just under 600W. |
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