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Take $420 for one of the 7970s?
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Those look pretty awesome, how much will you be selling the blue lasers for?
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There was some discussion about pin B3 being listed as "reserved" in the older specification for PCI-E.
Are we sure that this should be 12 V and it works without problem ?
Otherwise, excellent guide !
Interesting... I found some other specs online showing the B3 connector as reserved too. Looking a bit deeper though, it appears the spec changed with pcie version 1.1 in March of 2005. ( http://www.fpgarelated.com/usenet/fpga/show/65714-1.php) Original specs are a bit hard to come by but here is another reference supporting B3 as 12v.( interfacebus.com) I am currently using the connector pictured without issue and cablesaurus is using the same 5 connectors. Still, if someone is mining with a 1.0 spec card, x850 or lower, sending power on B3 may not be a good idea. I'll update the guide to reflect that. Thanks! |
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If you're like me, you're not willing to shell out 27 bucks for a molex equipped extender from Cablesaurus or eBay. Fortunately they are pretty easy to make. Thanks to haploid for some tips. What you'll need:- Cheap extender cable
- Molex cable with female connector
- Wire strippers
- Soldering iron
- Exacto knife
- Electrical tape
- A few minutes
What you'll do:- Seperate all 5 12v lines from the extender cable with exacto knife. Side B - Pin 1,2,3. Side A - Pin 2,3(PCI Express Pinout) Edit: Note: Side B is not facing the camera in the photo below! Side B is face down.
- Sever the 12v lines and strip the sides going to the PCIe female connector. Be very carful not to sever pin 1 on side A, this is the present pin which tells your motherboard that a device is connected.
- Sever and strip the 12v line going into your molex female connector. Pin 1 (Molex Pinout)
- Solder the 5 12v lines from your extender to the 12v line on your molex connector and wrap with electrical tape.
- Buy $20 worth of bitcoins with the money you saved!
NOTE:
PCIE 1.0 spec specified pin B3 as reserved. Pin B3 was changed to 12v with 1.1 spec in March of 2005. If you are mining with a 1.0 spec card, x850 or lower, do not route B3 to molex (Use A2,A3,B1,B2 only). The instructions above are valid for all pci 1.1 - 3.0 spec cards(x1800 and above). Finished Product: |
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+1 to CrazyBlane
Bought 2 x 5870's from him. They arrived quickly, well packed, and in excellent condition.
+1 amazingrando. Honest trader. |
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$105 + shipping. I've been running at 850/300 under 70 degrees for the past couple months.  |
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Bought the 500gb seagate and it's arrived yesterday. Super quick shipment, thanks!
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Are these all 2.5"? If so, what do you want for them?
My apologies. I read the 2.5" in the title and it just never registered in my brain. Newegg had a good deal on a new 1tb for ~$90. Dang, that is a really good deal. I've been holding out for a newegg deal like that but also willing to take one off a fellow bitcoiner's hands. |
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Looking for something to put in my PS3
I've got a western digital blue or green 500gb if those tickle you fancy. I do have a 1tb WD green but I'd need a few days to finish clearing off the data. (Shuffling data onto the new file server.) Are these all 2.5"? If so, what do you want for them? |
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Purchased From Vitality
Looking for something to put in my PS3
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SOLDLooking to sell 2x 5870s for $160 each at going btc rate. They have been running at 850/250 core to mem clock for the past few months. Fans at 54% and temps around 68 max. 5870s are OEM ATI reference models. I'm also willing to trade for a 5970. 
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I must say.. Great picture!
Haha, thanks. I'm a horrible artist with the handwriting of a 2 year old, but I gave it my best. |
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Haha, thanks. Looking for something new or like new.
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Looking to trade 2x5870s for 1x5970. 5870s have been running at 850/250 core to mem clock for the past month. Fans at 54% and temps around 68 max. 5870s are OEM ATI reference models. |
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I'm not sure how you can be drawing 1000w from the wall with 3 5970's and a 5830. You may want to remeasure that. 3x 5970 = 900w and I can't imagine everything else only taking 100w. At the wall, no less.. which means you are only drawing ~750w DC? I just can't see that happening with a fully loaded set of GPUs.
Anyway, they are easy to make yourself if you've got a fine tipped soldering iron. It's 5 wires you have to remove from the PCB end, solder together onto a molex and away you go.
No joke, my machine is currently plugged into a Kill A Watt meter and it hovers around 1000w at full load. Configuration has changed a bit since the original post but it's extremely barebones. Linuxcoin running off of a usb stick with no extra drives, 3 5970s clocked at 820/250, and 1 5830 at 780/250. I'm thinking I can replace that 5830 with another 5970 if I use powered pcie extenders. |
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