Topic: I need cheap solutions for 6 - 7 card GPU (Read 1637 times)

Not sure on availability, but Gigabyte just announced a H110 based mining board - 1 PCI-E 16x slot, 5 PCI-E 1x slot, supposed to be $70.

Ars Technica had a review of it.

Back in stock troll:

ASRock H81 PRO BTC R2.0 - $80

https://www.newegg.com/Product/Product.aspx?Item=N82E16813157724

BIOSTAR TB85 - $75

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138436

BIOSTAR TB250-BTC - $85

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138449

 Yes, 3 GPUs per rig - 2 full length cards, and some sort of "short" card to let the middle card have at least ONE fan mostly clear to get some cooling to it, using the *physical* 16-bit PCI-E slots (which are usually 1 x 16, 1 x 8, and 1 x 4 electrically on most lower-cost motherboards but sometimes are 16/4/4 and often time that 16 electrically slot has to share PCI-E lanes with the second slot making the board 8/8/4 electrically in practice).

 The actual price difference between a pair of 3 card rigs and a 6-card riser rig ends up not being a lot - no cost of risers, can get away with 2 PS that are a lot lower wattage and *usually* ends up being the same to a hair less then the 1 big PS for a 6-card rig (or you end up using a 2 PS setup with the same PS I'd be using) - and in some cases you have to get "creative" to get enough power connectors to POWER the risers, which adds some cost.
 Keep in mind that for MOST mining rigs the majority of the cost is the GPUs themselves.

 I do concede that a 6-card rig WILL usually cost a little less than a pair of 3 card rigs - but it's not all that big of a difference as a percentage, especially for those of us running NVidia rigs (or folks paying the recent GOUGE pricing on RX-series AMD cards), and I find the non-riser rigs tend to be more reliable.

 Did you even bother LOOKING at that link?

 The H81 link YOU POSTED is showing the board at $129, NOT $80.

 Just like during my LAST reply.

Just a curiosity: by "I don't build riser rigs" do you mean you only connect gpus to full pci-e x16 (at least electrycally) slots?
So do you only get 2-3 gpus per rig / motherboard?

That's pretty cheap, even when I buy in bulk, my supplier from Hong Kong is more expensive.

The Asrock H81 are still in stock for $80. The Biostar mining boards are also $10 cheaper than before and in stock.

ASRock H81 PRO BTC R2.0 - $80

https://www.newegg.com/Product/Product.aspx?Item=N82E16813157724

BIOSTAR TB85 - $75

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138436

BIOSTAR TB250-BTC - $85

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138449

 When I clicked the link right before my reply asking about WHERE it was available, it showed the board as "OUT OF STOCK".

 That's WHY I replied as I did.

 When I clicked the link JUST NOW, it showed the board at $129.

 And you call ME clueless.

Everybody here is giving bad advice.

Yes there are motherboards like the ASRock BTC Pro or the Gigabyte 990FXA-UD5 which can easily use 6 GPUs however you can't find those motherboards anywhere at decent prices. Trust me i've tried.

Most of these old AM3 motherboards which are almost half a decade old are selling more above MSRP even. At that stage you are better off just buying some newer modern motherboards which might be easier to resell in the future.

It's $169

Thanks! I picked up the last one from Newegg I wonder will it work with power-less simple risers...

I never get my a88x-g45 working more then 2gpu, would u share your trick? Anything i need to do in bios? Thanks a lot ....

I'm using http://mylifegadgets.com/MSIZ170A not the cheapest, but 100% uptime currently..

I already have 7 rigs.

What I want is to mass produce those rigs. So I can afford research time.

I am selling the biostar TB250Btc too, ships worldwide by speedpost. Have 15 at hand now.

http://cryptomininghw.com/product/biostar-tb250-btc-6-gpu-mining-motherboard/

You are clueless or a troll. As I said in my response, the board has been and still is available on Newegg NEW for $80. If you even bothered to click the link before posting your unhelpful nonsense you would see that. The H81 BTC R2.0 was and still is the newest mining motherboard from Asrock that was update from the original R1.0. Only within the last week did Asrock release the new H110 Pro BTC+ with 13 PCI-E slots. The other mining boards are also available on Newegg including the Biostar TB85 and TB250.

BIOSTAR TB85 - $85

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138436

BIOSTAR TB250-BTC - $95

https://www.newegg.com/Product/Product.aspx?Item=N82E16813138449

 The board is available WHERE?
 In what quantity?
 Used, or refurb, or VERY LIMITED left over new stock from when they WERE still being made?

 I have seen a LOT of links to that board for sale - only to turn up with "out of stock" notices when I got curious and checked them, or other folks check them and state "out of stock now".
 It seems to be a good board for riser rigs *WHEN* you can get them, but it's not a good board to recommend when it hasn't been MADE for years, unless you're also going to recommend alternatives that ARE current production and have been more reliably available over the past year.

 ASRock has put out some more recent "mining" targeted boards, but I don't pay much attention to them as I don't build riser rigs and couldn't care less how many PCI-E 1x slots a board has.

Says who, you? The board is available and has been all week, which is why I recommended it as a cheap motherboard specifically made for mining with 6 cards. Do you have a better suggestion for a board in that price range that supports 6 cards and is available?

I am so glad at least one other person recognizes how silly it is to chase down such an old board when there are so many currently functional options.

 By the time you add your splitter thing, and everything you need for it, the cost isn't much if any different than just going with a motherboard that is SPECIFICALLY made to handle 6+ cards, and you'll probably see better reliability if you don't use the splitter.

 There WERE AMD AM3/AM3+ based motherboards made that could handle 6-7 cards out of the box - Gigabyte "-UD7" models were very popular during Litecoin GPU days for that reason - but I don't know of any are still in production, and I've never personally used any of them (my go-to board at this time is the ASRock 970 Extreme4, but it only has 5 PCI-E slots and I don't build riser rigs).