Author Topic: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow  (Read 3603 times)

Offline rhd-ltc

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I've got my first mining rig almost all picked out. I'm going to pickup the parts in person tomorrow, but unfortunately my selection is a bit limited. Below is the BASE SYSTEM I've picked out, the only piece left, are the dual video cards. I'm wondering if anyone has any thoughts on the various options?

BASE SYSTEM

Gigabyte 990FXA-UD3 AMD990FX ATX AM3+ DDR3 4PCI-E16 2PCI-E1 1PCI SLI SATA3 USB3.0 Motherboard

AMD Phenom II X4 965 Black Edition Quad Core Processor AM3 3.4GHZ 8MB Cache 125W 45NM Retail Box

XFX 750W PRO750W Core Edition Single Rail ATX 12V 62A 24PIN ATX Power Supply 80PLUS Bronze PSU

Kingston KHX1600C9D3B1K2/8GX 8GB Kit 2X4GB 1600MHz DDR3 240PIN DIMM Unbuff Hmp HyperX CL9

Western Digital WD Caviar Blue 320GB SATA 6GB/S 7200RPM 16MB Cache 3.5in Internal Hard Drive OEM

Antec Three Hundred Two Mid Tower Gaming Case 302 ATX 3X5.25 6X3.5INT No PS Front USB3.0 & Audio


VIDEO CARD OPTIONS (price shown is total for system above, plus the 2x video cards chosen)

$920
(2x) XFX Radeon HD 7850 Core Edition 860MHZ 2GB 4.8GHZ GDDR5 2xDVI HDMI 2XMINIDP PCI-E Video Card

$1020
(2x) Gigabyte Radeon HD 7870 OC 1100MHZ 2GB 4.8GHZ GDDR5 DVI HDMI 2XMINIDP PCI-E Video Card

$1080
(2x) Powercolor Radeon HD 7870 PCs 2GB 4.8GBPS GDDR5 Vortex II DL DVI-I Sl DVI-D HDMI 2XMINIDP Video Card

$1080
(2x) ASUS Radeon HD 7870 1.0GHZ 2GB 4.8GHZ GDDR5 CrossFireX DVI HDMI DisplayPort PCI-E DX 11 Video Card

$1260
(2x) Sapphire Radeon HD7950 3G GDDR5 PCI-E HDMI/DVI-I/DUAL Mini DP With Boost Video Card

Offline live627

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #1 on: April 06, 2013, 07:23:10 AM »
Overpaying, much? (Psst, try Newegg)
LdqQwaUCJqWCwwH6kzagZfsmRP1Jt25er1

Offline rhd-ltc

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #2 on: April 06, 2013, 07:30:34 AM »
Overpaying, much? (Psst, try Newegg)

I sure am - welcome to buying stuff in Canada ;)

Apart from the generally inflated prices, in relative terms, what do you think of my options?

Offline live627

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LdqQwaUCJqWCwwH6kzagZfsmRP1Jt25er1

Offline shyliar

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #4 on: April 06, 2013, 12:34:24 PM »
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2555845&CatId=7387

I buy these in Canada. It's the same price at their retail store.

There is also a newegg.ca available now.

Please support the Litecoin Dev team here https://litecointalk.org/index.php/topic,3874.0.html

Offline rhd-ltc

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #5 on: April 06, 2013, 02:22:17 PM »
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2555845&CatId=7387

I buy these in Canada. It's the same price at their retail store.

There is also a newegg.ca available now.

Good options for sure, but ncix has a retail store in Vancouver, tiger doesn't. So it's worth doing ncix when I want to be able to do the project today :)

Offline rhd-ltc

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #6 on: April 06, 2013, 02:37:23 PM »
Question:

Suppose want to expand my hash rate two weeks from now, will that motherboard support adding two new cards if:
- I use PCIE riser cables so that they can physically fit in my case
- I add an additional PSU just to handle the two new cards

?

Offline omik

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #7 on: April 06, 2013, 03:09:16 PM »
Question:

Suppose want to expand my hash rate two weeks from now, will that motherboard support adding two new cards if:
- I use PCIE riser cables so that they can physically fit in my case
- I add an additional PSU just to handle the two new cards

?

This guy is trying to do just that and has run into a problem. Hoping he gets it fixed and posts what he found to fix it.

http://forum.litecoin.net/index.php/topic,1871.0.html

Offline omik

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #8 on: April 06, 2013, 03:12:32 PM »
Sorry to see the prices you guys have to pay up there rhd, wow.

Personally, after reading through a bunch of threads and the LTC hardware comparison I've settled on 7950's for my first rig. Maybe after I've gotten it up and running I'll upgrade to 7970's, shall see.

Offline rhd-ltc

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Re: 7850 vs 7870 vs 7950 - choosing the last component for tomorrow
« Reply #9 on: April 06, 2013, 03:14:27 PM »
This guy is trying to do just that and has run into a problem. Hoping he gets it fixed and posts what he found to fix it.

http://forum.litecoin.net/index.php/topic,1871.0.html

Thank you for bringing that to my attention!

I wonder if I would be safer going with: Gigabyte GA-X79-UP4 ATX LGA2011

EDIT: NVM - that's an intel cpu board, which kills the economics
« Last Edit: April 06, 2013, 03:31:40 PM by rhd-ltc »