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AMD FX-8350 Processor

The first worthwhile Piledriver CPU.

January 28, 2013



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Today we'll take a closer look at AMD FX-8350, the top processor of the Vishera series, based on the Piledriver microarchitecture.

Testbeds

CPU FX-8350 FX-8150 A10-5800K Phenom II X6 1100T
Core Vishera Zambezi Trinity Thuban
Process technology, nm 32 32 32 45
Core clock (std/max), GHz 4.0/4.2 3.6/4.2 3.8/4.2 3.3/3.7
Cores/threads 8/8 8/8 4/4 6/6
L1 cache (sum), I/D, KB (per core) 256/128 256/128 128/64 384/384
L2 cache, KB 4 x 2048 4 x 2048 2 x 2048 6 x 512
L3 cache, MB 8 8 - 6
Uncore clock, GHz 2.2 2.2 - 2.0
RAM 2 x DDR3-1866 2 x DDR3-1866 2 x DDR3-1866 2 x DDR3-1333
GPU - - Radeon HD 7660D -
Socket AM3+ AM3+ FM2 AM3
TDP, W 125 125 100 125

Firstly, we'll compare the newer top AMD FX-8350 with the older top AMD FX-8150. As you see, they have similar specifications: four 32-nm modules with a large L3 cache, the same TDP and Turbo mode core/cache frequencies. However, the novelty's base clock has increased by more than 10 percent, so we expect it to have a significant advantage in multi-threading tasks (as opposed to single-threading tasks, where only architecture improvements can help).

We have also thrown in an AMD A10-5800K. Though it belongs to a different class of processors, it has the same architecture and similar frequencies, so it'll be interesting to compare the CPUs in few-threading tests. Moreover, if you're satisfied with the overall price/performance ratio of the cheaper A10-5800K, you won't have to look for a more expensive processor.

The fourth CPU, Phenom II X6 1100T, has outperformed the FX-8150 in some tests. Therefore, such a comparison with the today's CPU looks interesting as well.

CPU Core i5-2500 Core i5-3570K Core i7-2600 Core i7-3770K
Core Sandy Bridge Ivy Bridge Sandy Bridge Ivy Bridge
Process technology, nm 32 22 32 22
Core clock (std/max), GHz 3.3/3.7 3.4/3.8 3.4/3.8 3.5/3.9
Cores/threads 4/4 4/4 4/8 4/8
L1 cache (sum), I/D, KB 128/128 128/128 128/128 128/128
L2 cache, KB 4 x 256 4 x 256 4 x 256 4 x 256
L3 cache, MB 6 6 8 8
Uncore clock, GHz 3.3 3.4 3.4 3.5
RAM 2 x DDR3-1333 2 x DDR3-1600 2 x DDR3-1333 2 x DDR3-1600
GPU HD 2000 HD 4000 HD 2000 HD 4000
Socket LGA1155 LGA1155 LGA1155 LGA1155
TDP, W 95 77 95 77

We compared AMD FX-8150 with Intel Core i5-2500 and Core i7-2600, because it had fit just between them in terms of price but then became as cheap as low-range Core i5 models, yielding its original position to AMD FX-8350 and FX-8320. Judging by the price, the latter pair should be compared with upper-range Core i5 CPUs, but we'll take Intel Core i5-3570K as well as Core i7-3770K to provide a more comprehensive overview.

Socket Motherboard RAM
FM2 MSI FM2-A85XA-G65 (A85) G.Skill [RipjawsX] F3-14900CL9D-8GBXL (2x1866; 9-10-9-28)
AM3+ ASUS Crosshair V Formula (990FX) G.Skill [RipjawsX] F3-14900CL9D-8GBXL (2x1866; 9-10-9-28)
AM3 ASUS M4A78T-E Corsair Vengeance CMZ8GX3M2A1600C9B (2x1333; 9-9-9-24-2T, Unganged Mode)
LGA1155 Biostar TH67XE (H67) Corsair Vengeance CMZ8GX3M2A1600C9B (2x1333/1066; 9-9-9-24/8-8-8-20)

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Article navigation:

Page 1: Introduction, testbeds

Page 2: Tests

Page 3: Tests cont'd, final thoughts



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