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Topic: New AMD APUs... [AMD A8-Series] - page 3. (Read 18184 times)

full member
Activity: 235
Merit: 100
October 05, 2011, 11:03:51 AM
#30
if AMD would just make gpu chips stack-able in to arrays that would be something
that would be awsome
get 10 HD6970 chips stacked together..
it could dump 3000 watts of heat in a square inch.

just have to figure out how to cool it  Huh
donator
Activity: 1218
Merit: 1079
Gerald Davis
October 05, 2011, 09:54:55 AM
#29
Thank you. I have been reading up a bit on them and it is quite confusing. You'd think that in AMD's whole fusion strategy they could allow the GPU and the CPU to access the same cache. Perhaps this is further down the pipeline.

Possibly someday.  One thing is for sure we can expect tighter and tighter integration of CPU and GPU cores.  Currently the GPU doesn't have access to CPU cache though.

A high end "fusion" could be interesting for high performance computing.  Imagine a chip w/ 4 or 8 x86 cores and a much larger shader core one with internal high speed cache and ability to share L2 caches of "traditional" cores.    In a 4 socket server that would give you pretty amazing computing densities. 

Of course AMD whole blending of the lines between CPU & GPU will eventually kill the "CPU friendly" block chains.  It is a futile endeavor.   
sr. member
Activity: 252
Merit: 250
October 05, 2011, 08:58:05 AM
#28
It'll be about 92% of a 5570, or about 55 MH/s. Smiley

I have a 5570 and can do 200+ Mh/S... Unless a 92% means something different now, there is a problem somewhere.

OT

I'm curious about your settings ...
hero member
Activity: 756
Merit: 500
October 05, 2011, 08:22:33 AM
#27
The shader core is a standard GPU (called HD 6550D) its specs are similar to the GPU on HD 6570 video card.
It is 400 shaders vs 480 running at higher clock and it is more efficient using 32nm process but it is for all intents and purposes a GPU.

It has all the advantages and disadvantages of GPU.  Namely it only has 64KB on cache on the GPU which is insufficient to efficiently run scrypt. The CPU "side" of the chip is a rather pedestrian CPU.  It should perform similarly to any other modern CPU.

So while you "could" use it to mine "CPU friendly" you won't get a massive boost over other CPU as the GPU is "crippled".  A higher clocked multi-core chip (like 6 core Phenom II) would still be superior.

Thank you. I have been reading up a bit on them and it is quite confusing. You'd think that in AMD's whole fusion strategy they could allow the GPU and the CPU to access the same cache. Perhaps this is further down the pipeline.
donator
Activity: 1218
Merit: 1079
Gerald Davis
October 05, 2011, 07:39:15 AM
#26
The shader core is a standard GPU (called HD 6550D) its specs are similar to the GPU on HD 6570 video card.
It is 400 shaders vs 480 running at higher clock and it is more efficient using 32nm process but it is for all intents and purposes a GPU.

It has all the advantages and disadvantages of GPU.  Namely it only has 64KB on cache on the GPU which is insufficient to efficiently run scrypt. The CPU "side" of the chip is a rather pedestrian CPU.  It should perform similarly to any other modern CPU.

So while you "could" use it to mine "CPU friendly" you won't get a massive boost over other CPU as the GPU is "crippled".  A higher clocked multi-core chip (like 6 core Phenom II) would still be superior.
hero member
Activity: 756
Merit: 500
October 05, 2011, 07:24:21 AM
#25
Could you use this with something like Tenebrix working with both the CPU and the shaders?
legendary
Activity: 2450
Merit: 1002
July 30, 2011, 03:19:33 PM
#24
I have set one of these up and using CGminer ... the a8 can pull off around 68mh/s .. OS is win7 x64.
Not too bad!
newbie
Activity: 50
Merit: 0
July 30, 2011, 11:59:50 AM
#23
So, the 2.9GHz will do 65Mhash/s...

What about the 2.6GHz version?
The cpu speed is irrelevant. What you look at is how many shaders there are, and how fast the shaders run.

400 shaders at 600 mhz is the strongest Llano you can get.


Running all 4 cores. Getting 65MHash/s
Best to deactivate the cpu mining and only mine with the graphics shaders.
Overclocking the shaders from 600 Mhz should boost your hash rate far more than the cpus ever could achieve.


If they make a power-efficient
It's vliw5 at 32 nm soi. It's far more power efficient than any other graphics card in existence currently.
donator
Activity: 2352
Merit: 1060
between a rock and a block!
July 29, 2011, 06:09:33 PM
#22
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s


How are you cooling it? stock sink/fan or something else?

Have you tried overclocking?
member
Activity: 99
Merit: 10
July 07, 2011, 03:37:02 PM
#21
What software are you using to mine?

GUIMiner 0701

But is GUIMiner taking advantage of the GPU core?

Yes.  You can't get 65mhash out of a normal CPU.
legendary
Activity: 1050
Merit: 1000
July 07, 2011, 02:28:05 PM
#20
if AMD would just make gpu chips stack-able in to arrays that would be something
member
Activity: 68
Merit: 10
High Desert Dweller-Where Space and Time Meet $
July 07, 2011, 01:54:41 PM
#19
What software are you using to mine?

GUIMiner 0701

But is GUIMiner taking advantage of the GPU core?
newbie
Activity: 21
Merit: 0
July 07, 2011, 10:22:00 AM
#18
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s

Have you considered overclocking? 

You should worry about Noise generated when running full load(even just 1 core)
Better spend $30 for a after-market heat-sink+fan.
newbie
Activity: 21
Merit: 0
July 07, 2011, 10:20:53 AM
#17
What software are you using to mine?

GUIMiner 0701
hero member
Activity: 938
Merit: 501
July 07, 2011, 01:03:34 AM
#16
What software are you using to mine?
donator
Activity: 2352
Merit: 1060
between a rock and a block!
July 06, 2011, 10:38:56 PM
#15
So, the 2.9GHz will do 65Mhash/s...

What about the 2.6GHz version? 

I know it's the same wattage and all, but it's $20 cheaper and if it will do same hashing rate, i'd prefer to pay $20 less.
member
Activity: 68
Merit: 10
High Desert Dweller-Where Space and Time Meet $
July 06, 2011, 10:07:01 PM
#14
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s


What's the load on the cores? Wonder how close it is to using 100 watts. Sounds about right though. It's a nice boost over a normal cpu.

Are you using the internal GPU? That's what I want to see tested.
legendary
Activity: 1386
Merit: 1004
July 06, 2011, 05:05:39 PM
#13
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s

Have you considered overclocking? 
hero member
Activity: 728
Merit: 501
CryptoTalk.Org - Get Paid for every Post!
July 06, 2011, 04:46:03 PM
#12
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s


What's the load on the cores? Wonder how close it is to using 100 watts. Sounds about right though. It's a nice boost over a normal cpu.
newbie
Activity: 21
Merit: 0
July 06, 2011, 04:38:38 PM
#11
I have a A8-3850 Box,

Running all 4 cores. Getting 65MHash/s
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