Launch of the AMD FX 8 Core processor - Page 5

Christenson · 2011-11-08, 22:21

sorry, not enough cryo experience to know that!!!!

nucleon · 2011-11-12, 10:17

Ok, I bought one. FX8120.

Stupid me didn't check that the motherboard needed a flash update _before_ installing the CPU. And one needs an already supported CPU to do the flashing.

So I have a FX8120 system here sitting on my desk doing nothing.

I'll have to go to the shops tomorrow morning to get a cheap socket AM3 processor to install to do the update.

Oh the pain.

-- Craig

Dubslow · 2011-11-12, 19:59

I declare myself rather interested but not particularly hopeful.

nucleon · 2011-11-14, 11:07

I'm not impressed yet.

I have the 8120 running stable@3.8GHz, ram@1333MHz.

So far 4x instances mfaktc, with sieveprimes=5000, makes GTX580@795MHz hit only 50%ish usage

Even my i7-920 would max that GPU.

Still fiddling...

-- Craig

KyleAskine · 2011-11-14, 11:08

The six core sandy bridge processors are now out!!

Ralf Recker · 2011-11-14, 17:22

Has anyone already run gmpbench 0.2 linked against a recent "make tune"d version of gmp or mpir on the FX or Bulldozer based Opterons?

Dubslow · 2011-11-14, 22:03

Quote:

Originally Posted by KyleAskine

The six core sandy bridge processors are now out!!

Woooooo!!!!
Too bad they're so fricken expensive.

fivemack · 2011-11-14, 23:38

They're not that bad; six hundred dollars isn't unreasonable for six fast cores and four fast memory controllers, though I'll admit that the motherboards are a bit expensive.

Dubslow · 2011-11-15, 02:50

Well I suppose the memory controllers might count, but I could buy two 2600ks for the same money and eight cores, or better, 2.5 2500ks for 10 cores. (Ignoring the whole 'half a 2500k' thing (no pun intended))

Christenson · 2011-11-15, 04:02

You just have to ask yourself: If it takes six men six hours to dig six holes, how long does it take half as many men to dig as many half-holes?

Anyway, the right numbers to look at are total cost of system, that includes CPU and Mobo and possibly box, along with electricity cost. The bleeding edge is always more $$ for the last ounce of performance.

bcp19 · 2011-11-15, 04:34

Quote:

Originally Posted by Christenson

You just have to ask yourself: If it takes six men six hours to dig six holes, how long does it take half as many men to dig as many half-holes?

Anyway, the right numbers to look at are total cost of system, that includes CPU and Mobo and possibly box, along with electricity cost. The bleeding edge is always more $$ for the last ounce of performance.

6 hours

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2011-11-08, 22:21	#45
Christenson Dec 2010 Monticello 5·359 Posts	sorry, not enough cryo experience to know that!!!!

2011-11-12, 10:17	#46
nucleon Mar 2003 Melbourne 5×103 Posts	Ok, I bought one. FX8120. Stupid me didn't check that the motherboard needed a flash update _before_ installing the CPU. And one needs an already supported CPU to do the flashing. So I have a FX8120 system here sitting on my desk doing nothing. I'll have to go to the shops tomorrow morning to get a cheap socket AM3 processor to install to do the update. Oh the pain. -- Craig

2011-11-12, 19:59	#47
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 3×29×83 Posts	I declare myself rather interested but not particularly hopeful.

2011-11-14, 11:07	#48
nucleon Mar 2003 Melbourne 5×103 Posts	I'm not impressed yet. I have the 8120 running stable@3.8GHz, ram@1333MHz. So far 4x instances mfaktc, with sieveprimes=5000, makes GTX580@795MHz hit only 50%ish usage Even my i7-920 would max that GPU. Still fiddling... -- Craig

2011-11-14, 11:08	#49
KyleAskine Oct 2011 Maryland 2×5×29 Posts	The six core sandy bridge processors are now out!!

2011-11-14, 17:22	#50
Ralf Recker Oct 2010 191₁₀ Posts	Has anyone already run gmpbench 0.2 linked against a recent "make tune"d version of gmp or mpir on the FX or Bulldozer based Opterons?

2011-11-14, 23:38	#52
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2×7×461 Posts	They're not that bad; six hundred dollars isn't unreasonable for six fast cores and four fast memory controllers, though I'll admit that the motherboards are a bit expensive.

2011-11-15, 02:50	#53
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 7221₁₀ Posts	Well I suppose the memory controllers might count, but I could buy two 2600ks for the same money and eight cores, or better, 2.5 2500ks for 10 cores. (Ignoring the whole 'half a 2500k' thing (no pun intended))

2011-11-15, 04:02	#54
Christenson Dec 2010 Monticello 5·359 Posts	You just have to ask yourself: If it takes six men six hours to dig six holes, how long does it take half as many men to dig as many half-holes? Anyway, the right numbers to look at are total cost of system, that includes CPU and Mobo and possibly box, along with electricity cost. The bleeding edge is always more $$ for the last ounce of performance.