AMD FX 4100 

Released October, 2011
  • 3.6 GHz
  • Quad core
  • Unlocked
4.7 Out of 10

Benchmark Results:The AMD FX-4100 didn't perform that bad in the game benchmarks, but it was just faster than the AMD A8-3850 and Intel Core i3-2120.
by Legit Reviews (Nov, 2011)
Benchmark Results: PCMark 7 showed that the AMD FX-4100 was able to score 4012 points, which made it a tad faster than the AMD A8-3850 and Intel Core i3-2120 in this benchmark.
by Legit Reviews (Nov, 2011)

CPUBoss Review Our evaluation of the AMD FX 4100 among desktop CPUs (over 75W)


Benchmark performance using all cores

FX 4100
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

FX 4100
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

FX 4100
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

FX 4100
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

FX 4100
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

FX 4100
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

FX 4100

Benchmarks Real world tests of the AMD FX 4100

GeekBench 3 (Multi-core) Data courtesy Primate Labs

FX 4100
Core i5 3470

GeekBench 3 (Single core) Data courtesy Primate Labs

FX 4100
Core i5 3470

GeekBench 3 (AES single core) Data courtesy Primate Labs

FX 4100
2,150,000 MB/s
Phenom II X4 955
129,850 MB/s
Core i5 3470
2,470,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

FX 4100
Core i5 3470

GeekBench (64-bit) Data courtesy Primate Labs

FX 4100
Core i5 3470


FX 4100
Core i5 3470

PassMark Data courtesy Passmark

FX 4100
Core i5 3470

PassMark (Single Core)

FX 4100
Core i5 3470

Reviews Word on the street for the AMD FX 4100

The benchmarks don't make for particularly good reading for the AMD FX 4100 Black Edition.

Right away it was handling my 2x4BG of DDR3-1600CL9 much better than my Phenom IIs could, taking it up to 1800MT/s at CL8.


8.1 Out of 10

What People Are Saying Give it to me straight

Socket Type

The AMD FX-4100 will work only on AMD AM3+ ready motherboards, but the good news is that sites like Newegg have 46 AMD AM3+ boards to pick from with prices ranging from $54.99 to $239.99.
by Legit Reviews (Nov, 2011)
Eventually I got around to placing it under water and now enjoy a 4.8GHz OC that is P95 stable (overnight) and the chip has yet to give me any issues.
by NostraD (Aug, 2012)
he Corsair Vengeance 8GB 1866MHz memory kit was set to 1866MHz with 1.5v and 9-10-9-28 1T memory timings.
by Legit Reviews (Nov, 2011)


When it comes to performance we were shocked to see the AMD A8-3850 'Llano' processor and the Socket FM1 platform performing better than the AMD FX-4100 'Bulldozer' processor and the Socket AM3+ platform.
by Legit Reviews (Nov, 2011)
This particular chip clocked stable up to 4200MHz on stock voltage, and was still running cool, not breaking 35C with a Hyper 212.
by damric (Sep, 2012)
Turbo mode on the FX-4100 runs at just 3.7 (4 cores at load) or 3.8 GHz (2 cores at load), so it doesn't scale as high as the FX-8150.
by Legit Reviews (Nov, 2011)


While performance at stock speed was downright sucky, performance improved quite a bit once things were tuned up.
by damric (Sep, 2012)
We'd hoped for a lot more from this brand new AMD Bulldozer architecture, but the weak single-core performance, behind even the old Phenom II processors, makes us sad.
by Tech Radar (Dec, 2011)
Our readers were clearly disappointed with the performance results and we don't blame them.
by Legit Reviews (Nov, 2011)


The best that can be said about this dual-module Bulldozer, then, is that it's not far behind its triple and quad-module brethren in games.
by Tech Radar (Dec, 2011)
After all, if it's just games that gets you going, we'd argue there's only so many cores you actually need.
by Tech Radar (Dec, 2011)
I had placed a few of these in gaming builds earlier in the year.
by NostraD (Aug, 2012)


I would strongly suggest trying this CPU for any new gaming build.
by NostraD (Aug, 2012)
Despite the hype, the fact is PC games still don't scale all that well across multiple processor cores.
by Tech Radar (Dec, 2011)
Of course, what really matters is actual game performance and here Bulldozer's per-thread gutlessness duly rears its head.
by Tech Radar (Dec, 2011)

Specifications Full list of technical specs


Clock speed 3.6 GHz
Turbo clock speed 3.8 GHz
Cores Quad core
Socket type AM3+
Is unlocked Yes


Has a NX bit Yes
Has virtualization support Yes
Instruction set extensions
  1. ABM
  2. AES
  3. AMD-V
  4. AMD64
  5. AVX
  6. CLMUL
  7. CVT16
  8. F16C
  9. FMA4
  10. MMX
  11. SSE
  12. SSE2
  13. SSE3
  14. SSE4.1
  15. SSE4.2
  16. SSE4a
  17. Supplemental SSE3
  18. XOP
Supports dynamic frequency scaling Yes

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type DDR3-1866
Channels Dual Channel
Supports ECC Yes
Maximum bandwidth 29,866.66 MB/s


Architecture x86-64
Threads 4 threads
L2 cache 4 MB
L2 cache per core 1 MB/core
L3 cache 8 MB
L3 cache per core 2 MB/core
Manufacture process 32 nm
Transistor count 1,200,000,000
Max CPUs 1
Die size 319 mm²
Voltage range 1.14 - 1.55V
Operating temperature Unknown - 70.5°C


Overclock popularity 127
Overclock review score 4
Overclocked clock speed 4.66 GHz
Overclocked clock speed (Water) 4.99 GHz
PassMark (Overclocked) 2,972.7
Overclocked clock speed (Air) 4.66 GHz

power consumption

Annual home energy cost 34.18 $/year
Annual commercial energy cost 114.41 $/year
Performance per watt 6.46 pt/W
Idle power consumption 43W
Peak power consumption 130.6W


Architecture HyperTransport 3.1
Data rate 10,400 MB/s
Transfer rate 5,200 MT/s
Clock speed 3,200 MHz
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Showing 1 comment.
I have this FX4100 in my Phenom 2 asrock motherboard and im looking to get a better gameing performance out of my cpu, as i bought as a pic your parts they assemble online cyberpowerPC and i wasnt as informed when choosing parts i ended up with the bulldozer and have never really been too happy with games online, im running a Radeon HD 7750 video card w 8GB RAM, looking for upgrade CPU suggestions
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