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Topic: Anyone tried a VIA QuadCore for mining? (Read 2158 times)

sr. member
Activity: 283
Merit: 250
June 28, 2012, 08:55:48 PM
#10
So, I'm curious how fast these could go. the 10 MH/s above seems to be based on a (5 Gb/s) / (32 * 8 bits per sha256 hash) / (2 hashes per block hash)

Based on the following diff adding padlock support to openssl, it seems the instruction takes a round count. If the round count reduces memory pressure, perhaps the 2 hashes would take roughly the same time as one. This suggests that perhaps one of these quad cores could do up to 80 MH/s. 

http://www.logix.cz/michal/devel/padlock/kernel-sha/padlock-sha-complete.diff

Of course this is all speculation. If someone has one of these to borrow I'd play around with it and see what I could get out of it. Even 80 MH/s is nothing significant. But I'm curious...

-bgc
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
June 28, 2012, 08:31:41 PM
#9
The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.

So that turns out to be a whopping 10 MH/s?
Is that per core? Those things only use like 5 watts or something.


27W for the full quad core.
Oh zing, those things are power hogs then. The dual cores I have actually are rated TDP of 17 watts I think, but they are also underclocked compared to the single core units (1Ghz instead of 1.2Ghz)
legendary
Activity: 952
Merit: 1000
June 28, 2012, 08:28:27 PM
#8
The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.

So that turns out to be a whopping 10 MH/s?
Is that per core? Those things only use like 5 watts or something.


27W for the full quad core.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
June 28, 2012, 08:26:15 PM
#7
The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.

So that turns out to be a whopping 10 MH/s?
Is that per core? Those things only use like 5 watts or something.
legendary
Activity: 952
Merit: 1000
June 28, 2012, 09:21:43 AM
#6
The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.

So that turns out to be a whopping 10 MH/s?

Hey, that's not bad for a CPU  Grin
full member
Activity: 238
Merit: 100
★YoBit.Net★ 350+ Coins Exchange & Dice
June 28, 2012, 12:06:14 AM
#5
The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.

So that turns out to be a whopping 10 MH/s?
legendary
Activity: 1946
Merit: 1006
Bitcoin / Crypto mining Hardware.
June 27, 2012, 10:53:43 PM
#4
http://www.via.com.tw/en/products/processors/quadcore/index.jsp

It seems it has hardware support for SHA256. Any idea on performance?
Only recently did it become available on a motherboard, but I'm not interested in the formfactor that it became available on. However, the Quad Core is simply 2 Dual Core chips on one package, so testing a Dual Core should get some close numbers.

I do have a Dual Core (Zotac ZBOX NANO based on the VX900H chipset), so maybe I'll test it sometime.

This makes it sound like it's got specific instructions or features for SHA256, sort of like SB's Quick Sync for video encoding.
From http://www.via.com.tw/en/downloads/whitepapers/processors/WP080529VIA_Nano.pdf

The VIA Nano provides two of the most commonly used, SHA-1 and SHA-256, which are able to encrypt information at rates of up to 5 gigabits/sec.
legendary
Activity: 952
Merit: 1000
June 27, 2012, 10:37:56 PM
#3
http://www.via.com.tw/en/products/processors/quadcore/index.jsp

It seems it has hardware support for SHA256. Any idea on performance?
Only recently did it become available on a motherboard, but I'm not interested in the formfactor that it became available on. However, the Quad Core is simply 2 Dual Core chips on one package, so testing a Dual Core should get some close numbers.

I do have a Dual Core (Zotac ZBOX NANO based on the VX900H chipset), so maybe I'll test it sometime.

This makes it sound like it's got specific instructions or features for SHA256, sort of like SB's Quick Sync for video encoding.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
June 27, 2012, 09:02:23 PM
#2
http://www.via.com.tw/en/products/processors/quadcore/index.jsp

It seems it has hardware support for SHA256. Any idea on performance?
Only recently did it become available on a motherboard, but I'm not interested in the formfactor that it became available on. However, the Quad Core is simply 2 Dual Core chips on one package, so testing a Dual Core should get some close numbers.

I do have a Dual Core (Zotac ZBOX NANO based on the VX900H chipset), so maybe I'll test it sometime.
sr. member
Activity: 242
Merit: 251
June 27, 2012, 08:59:51 PM
#1
http://www.via.com.tw/en/products/processors/quadcore/index.jsp

It seems it has hardware support for SHA256. Any idea on performance?
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