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AMD FX-Series FX-8120 - FD8120FRW8KGU / FD8120FRGUBOX / FD8120FRGUWOX

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AMD FX-8120 is a desktop microprocessor from the FX Series of high-performance processors. With exception of lower operating frequency, this CPU has the same feature set as the flagship FX-8150: 8 cores, 8 MB of L3 cache, and unlocked multiplier. Since it runs at lower speed, this FX chip performs slower than the FX-8150, but on the other hand it is not as expensive. First specs of this part were leaked in May 2011, and more specifications emerged at the beginning of September. Starting from the first half of September 2011, the processor was available on pre-order in some online stores. On October 12, AMD introduced initial FX lineup, which included the FX-8120. The microprocessor was priced at $205, that is on a par with Phenom II X6 1100T.

AMD FX-8120 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD FX-Series
Model number  ? FX-8120
CPU part numbers
  • FD8120FRW8KGU is an OEM/tray microprocessor
  • FD8120FRGUBOX is a boxed processor with air-cooled heatsink and fan
  • FD8120FRGUWOX is a boxed processor with liquid cooling
Frequency  ? 3100 MHz
Turbo frequency3400 MHz (more than 4 cores)
4000 MHz (4 cores or less)
Bus speed  ? One 2600 MHz 16-bit HyperTransport link
Package938-pin micro-PGA package
SocketSocket AM3+
Weight1.4oz / 38.3g (CPU)
Introduction dateOctober 12, 2011
Price at introduction$205
Architecture / Microarchitecture
Processor core  ? Zambezi
Core stepping  ? OR-B2
Manufacturing process0.032 micron
Data width64 bit
The number of cores8
The number of threads8
Floating Point UnitIntegrated
Level 1 cache size  ? 4 x 64 KB two-way associative shared instruction caches
8 x 16 KB 4-way associative data caches
Level 2 cache size  ? 4 x 2 MB 16-way associative shared exclusive caches
Level 3 cache size8 MB up to 64-way associative shared cache
  • MMX instructions
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSSE3 / Supplemental Streaming SIMD Extensions 3
  • SSE4 / SSE4.1 + SSE4.2 / Streaming SIMD Extensions 4  ? 
  • SSE4a  ? 
  • AES / Advanced Encryption Standard instructions
  • ABM / Advanced Bit Manipulation  ? 
  • AVX / Advanced Vector Extensions
  • FMA4 / 4-operand Fused Multiply-Add instructions
  • XOP / eXtended Operations instructions
  • AMD64 / AMD 64-bit technology  ? 
  • VT / Virtualization technology  ? 
  • EVP / Enhanced Virus Protection  ? 
  • Turbo Core 2.0 technology
Low power features
  • Core C1, C1E, C6 and CC6 states
  • Package S3, S4 and S5 states
  • PowerNow!
Integrated peripherals / components
Integrated graphicsNone
Memory controller
  • The number of controllers: 1
    Memory channels: 2
    Supported memory: DDR3-1866
    Maximum memory bandwidth (GB/s): 29.9
Other peripheralsHyperTransport 3.1 technology
Electrical / Thermal parameters
Maximum operating temperature  ? 61°C
Thermal Design Power  ? 125 Watt
Notes on AMD FX-8120
  • The processor has unlocked clock multiplier
  • NorthBridge controller frequency is 2.2 GHz

Detailed side-by-side comparison

For detailed comparision of the AMD FX-8120 and any other other chip from our CPU database type in a chip name and/or its partial specs:

You can specify any of the following: manufacturer name, family name, model number, part number, core name, socket name, operating frequency, bus speed, and the last level cache. Here are examples of searches: FX-8120, FD8120FRW8KGU, AMD FX-Series 3.1GHz, Zambezi Socket AM3+

Historical price chart

The chart below shows official prices of AMD FX-6350, FX-8120 and FX-8320 processors:

Historical official prices of FX-6350, FX-8120 and FX-8320 processors


Q: My processor is running 55C under load. Is this normal?
A: Safe CPU temperatures are 60 degrees Celsius and below. It may still run fine with CPU temperatures, exceeding 60C threshold by a few degrees. Running the FX-8120 close to 70 degrees and higher is not recommended.

Q: Can I upgrade my AMD FX-8120 processor?
A: Probably yes. CPU compatibility is determined by your motherboard. Please check resource for CPU support list for your board.

FX-8120 Overclocking

Sorry, overclocking information is not available at this time.

Related news stories

AMD to drop prices, launch FX-4130 CPU on August 27
Aug 24, 2012: AMD today updated A-Series, FX-Series and Phenom II pricing pages, lowering prices on full range of "Llano" APUs, and high performance K10 and "Bulldozer" CPUs. The pages shows effective date August 27, which suggests that the price drops will happen next Monday. Overall, the prices were cut by 1% - 23%.

AMD cuts prices on A-Series APUs and FX CPUs
Apr 27, 2012: A few days after announcement of Intel's Ivy Bridge micro-architecture, many news sites reported that some European retailers slashed prices of FX-8150 processors by 15% - 20%, and suggested that AMD may have dropped the prices of other processors as well. Today AMD published new pricelist, confirming price drop for the FX-8150 model. The company also cut prices of six- and quad-core FX-Series chips, and for all microprocessors from A-Series.

AMD releases details of FX-8150 liquid cooler
Mar 26, 2012: Two AMD FX unlocked microprocessors with unusual "WOF" prefix are now available for pre-order in US online stores. Boxed FX-8120 and FX-8150 SKUs with part numbers FD8120FRGUWOX and FD8150FRGUWOX have a unique feature for production processors: they come with liquid cooling, which allows CPUs to reach higher overclock frequencies and/or achieve better system stability when overclocked. The liquid cooling is not cheap though, and pre-order prices for two FX models are $100 - $150 more expensive than air-cooled versions of the same chips. We don't know release dates of WOF models, although there is one fact that tells us that the release is not too far off. In the last two days AMD published AMD Liquid Cooling document with details on liquid cooler for FX-Series processors.

AMD FX-8120 with liquid cooling is available for pre-order
Mar 19, 2012: In February we reported on pre-order prices of then upcoming FX-Series microprocessors, one of which was a boxed FX-8150 with liquid cooling. The CPU had close to $400 pre-order price, and the price eventually slid to $375 level ($384 from Amazon). The processor hasn't appeared in stock yet, however different FX model with liquid cooling solution surfaced in online stores.

AMD cuts prices of Phenom II and FX CPUs
Feb 28, 2012: As you may know, AMD yesterday launched two FX microprocessors, including company's first production CPU, operating faster than 4 GHz. New product releases are usually accompanied by price drops of older models, and it wasn't an exception this time. AMD cut prices on two FX-Series models, and reduced prices for most of Phenom IIs. They also added pricing for A-Series A6-3620 and A8-3820 Accelerated Processing units (APUs).

AMD introduces first "Bulldozer" FX processors
Oct 12, 2011: Today AMD launched Bulldozer micro-architecture, and first four FX desktop microprocessors. Bulldozer microarchitecture takes radically different approach than previous generation of K10 chips, and, instead of separate cores, integrates from 2 to 4 modules. Each module contains two CPU cores, that share some circuitry, such as instruction level 1 cache, Floating-Point Unit and level 2 cache.

AMD FX processors to launch on October 12
Sep 22, 2011: This quarter AMD is going to launch server-class "Interlagos" and consumer-class "Zambezi" processors, based on new Bulldozer micro-architecture. In the past two weeks three "Zambezi" FX-Series CPUs surfaced for pre-order at a few online US stores, suggesting imminent release of these models. Yesterday Donanimhaber reported that AMD FX-Series family will launch on October 12.

Bits and pieces: AMD FX-8150 at 8.43GHz, Core i7-2700K frequency confirmed
Sep 15, 2011: Earlier this week, in a press release, titled "AMD Showcases World’s Fastest CPU", AMD announced new overclocking world record. Not yet released FX-8150 processor with 6 disabled cores was overclocked to staggering 8.429 GHz by a team of overclocking specialists working together with AMD engineers. It's definitely an impressive result, and a great marketing stunt.

Pre-order prices of AMD FX-Series CPUs
Sep 11, 2011: Earlier this week AMD announced shipping of server class microprocessors, based on upcoming "Bulldozer" core. The announcement indicated that the processors will be available next quarter. The server chips were, apparently, delayed as they were expected to launch a quarter earlier. According to Xbit laboratories, high-performance FX-Series chips for consumer market were also delayed, and they will be shipped in the fourth quarter.

Gigabyte reveals AMD FX-Series specifications
Sep 02, 2011: As you may already know, later this quarter AMD is going to launch Bulldozer micro-architecture, that at first will be used in server Opteron 6200 CPUs, and desktop FX-Series microprocessors. Specifications of desktop FX-Series were known for more than a month, and they recently were confirmed by Gigabyte. As was discovered by VR-Zone, the latest CPU support list update for several Gigabyte socket AM3+ motherboards includes the details on all AMD FX-Series SKUs.

Compare AMD FX-8120 benchmark results with all tested CPUs from one of the following families:

To compare this FX-Series CPU with any tested processor please proceed to

For additional benchmarks, comparing multi-threaded performance of this microprocessor with other FX-Series CPUs and the fastest AMD and Intel x86 chips, please visit AMD FX-8120 benchmarks page.

AMD FX-8120 Benchmarks

The graphs below show up to 10 microprocessors with approximately the same level of integer (CPU), floating-point (FPU), SIMD and memory performance. All processors were not overclocked, and were tested at a nominal frequency, with a stock heatsink and default BIOS settings. Click on the '?' mark next to each model name to see specifications of that model, and details of the test platform. To find out how the FX-8120 compares to other CPUs in specific benchmarks or in aggregate milti-threading performance please see benchmark tools section on the right.

Benchmarked processor

CPU ID:600F12
CPU vendor string:AuthenticAMD
CPU name string:AMD FX(tm)-8120 Eight-Core Processor

Integer performance

Part number   Result
Intel Core i7-940  ? 
AMD Phenom II X6 1045T  ? 
AMD FX-8140  ? 
Intel Core i7-860  ? 
AMD FX-8120 (95W)  ? 
AMD FX-8120  ? 
AMD Phenom II X6 1035T  ? 
Intel Core i7-920  ? 
AMD Phenom II X4 980  ? 
AMD Phenom II X4 975  ? 
AMD FX-6200  ? 

Floating Point performance

Part number   Result
AMD Phenom II X4 945 (95W, rev. C2)  ? 
AMD Athlon II X4 640  ? 
AMD Phenom II X4 945 (125W)  ? 
AMD Athlon II X4 640 (rev. E0)  ? 
AMD Phenom II X4 960T  ? 
AMD FX-8120  ? 
AMD A8-3850  ? 
AMD Phenom II X4 840T  ? 
AMD Athlon II X4 635 (rev. C3)  ? 
AMD Athlon II X4 635 (rev. C2)  ? 
AMD Athlon II X4 641  ? 

MMX / SSE / SSE2 performance

Part number   Result
AMD Phenom II X6 1065T  ? 
AMD FX-8140  ? 
AMD Phenom II X6 1055T (125W)  ? 
AMD Phenom II X6 1055T (95W)  ? 
AMD FX-8120 (95W)  ? 
AMD FX-8120  ? 
AMD FX-6350  ? 
AMD Phenom II X6 1045T  ? 
AMD Phenom II X4 980  ? 
AMD FX-6200  ? 
AMD Phenom II X6 1035T  ? 

Memory-intensive program performance

Part number   Result
AMD FX-4100  ? 
AMD Phenom II X4 955 (125W, rev. C3, BE)  ? 
AMD Phenom II X4 960T  ? 
AMD Phenom II X6 1075T (non-BE)  ? 
AMD Athlon X4 760K  ? 
AMD FX-8120  ? 
AMD Phenom II X6 1065T  ? 
AMD A8-5600K  ? 
AMD A8-6500B  ? 
AMD A8-6500  ? 
AMD Phenom II X6 1055T (95W)  ? 

CPU ID information for the FX-8120

Our CPUID database contains 2 records for this microprocessor. See all submitted records.

Use our CPU identification tool to check features of your CPU.

NOTE: The CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the AMD FX-Series FX-8120 CPU.

CPU Family:FX-Series
Model Number:FX-8120
Frequency:3110 MHz
Part number:
Stepping Code:FA 1135BPA
Submitted by:CPU-World
General information
Processor name (BIOS):AMD FX(tm)-8120 Eight-Core Processor
Compute units:4
Logical processors:8
Processor type:Original OEM Processor
Core stepping:OR-B2
CPUID signature:600F12
Family:21 (015h)
Model: 1 (01h)
Stepping: 2 (02h)

Cache: L1 data L1 instruction L2 L3
Size: 8 x 16 KB 4 x 64 KB 4 x 2 MB 8 MB
Associativity: 4-way set
2-way set
16-way set
64-way set
Line size: 64 bytes 64 bytes 64 bytes 64 bytes
Lines per tag: 1 1 1 1
Comments:   1 cache per 2 cores 1 cache per 2 cores  
Instruction set extensionsAdditional instructions
MMX Advanced Bit manipulation
AMD extensions to MMX CLFLUSH
Major featuresOther features
On-chip Floating Point Unit 1 GB large page support
64-bit / Intel 64 100MHz multiplier control
NX bit/XD-bit 128-bit SSE instructions
Secure Virtual Machine (Virtualization) 36-bit page-size extensions
Turbo Core Advanced programmable interrupt controller
PowerNow! / Cool'n'Quiet Core multi-processing legacy mode
  Debugging extensions
  Extended APIC space
  FXSAVE/FXRSTOR optimizations
  Hardware P-state control
  Hardware thermal control
  Instruction based sampling
  LAHF/SAHF support in 64-bit mode
  LBR virtualization
  LOCK MOV CR0 means MOV CR8
  Lightweight profiling support
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Misaligned SSE mode
  Model-specific registers
  Nested page tables
  OS visible workaround
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  SVM lock
  Support for NRIP save
  TSC rate is ensured to be invariant across all states
  Temperature sensor
  Time stamp counter
  Virtual 8086-mode enhancements
  Watchdog timer support

CPUs, related to AMD FX-8120

Model Cores /
Frequency Turbo
TDP Features Price  
AMD FX-Series family, Socket AM3+
   FX-61006 / 63.3 GHz3.9 GHz8 MB95W$112>
   FX-61206 / 63.5 GHz4.1 GHz8 MB95W >
   FX-63006 / 63.5 GHz4.1 GHz8 MB95W$112>
   FX-62006 / 63.8 GHz4.1 GHz8 MB125W$132>
   FX-63506 / 63.9 GHz4.2 GHz8 MB125W$132>
   FX-81008 / 82.8 GHz3.7 GHz8 MB95W >
   FX-81208 / 83.1 GHz4 GHz8 MB125W$153 
   FX-8120 (95W)8 / 83.1 GHz4 GHz8 MB95W >
   FX-81408 / 83.2 GHz4.1 GHz8 MB95W >
   FX-83008 / 83.3 GHz4.2 GHz8 MB95W >
   FX-83208 / 83.5 GHz4 GHz8 MB125W$153>
   FX-81508 / 83.6 GHz4.2 GHz8 MB125W$183>
   FX-83508 / 84 GHz4.2 GHz8 MB125W$195>
   FX-93708 / 84.4 GHz4.7 GHz8 MB220W$224>
   FX-95908 / 84.7 GHz5 GHz8 MB220W$306>
 • Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
 • Background color of specs and features indicate whether they are better or worse than similar spec/feature of the FX-8120
 • Click on the >  icon to compare any CPU in the table with the AMD FX-8120 (Javascript required).
 • The 'Price' column shows official AMD prices as of Apr 9, 2014. Prices for obsolete and tray-only processors are not provided.
 • List of related CPUs is not complete.

Pictures (10)

AMD FX-8120 box pictures
2011-11-05 01:46:23
Posted by: gshv

AMD FX-8120 box pictures
2011-11-05 01:51:05
Posted by: gshv

Front view.
2011-11-05 01:51:38
Posted by: gshv

Side view.
2011-11-05 01:52:03
Posted by: gshv

Back view.
2012-01-06 16:09:02
Posted by: gshv

CPU-Z screenshot. The processor is identified by CPU-Z as FX-8130P. Also, CPU-Z (or BIOS) incorrectly states that this is an Engineering Sample, possibly due to unlocked clock multiplier.
2012-02-02 05:07:59
Posted by: Copilus Mihai Andrei

2012-02-02 05:08:28
Posted by: Copilus Mihai Andrei

2012-02-02 05:09:57
Posted by: Copilus Mihai Andrei

AMD FX-8120 FD8120FRW8KGU Box Cooler
2012-02-02 05:10:21
Posted by: Copilus Mihai Andrei

AMD FX-8120 FD8120FRW8KGU Box Cooler
AMD FX-Series FX-8120
2012-02-04 10:18:01
Posted by: Copilus Mihai Andrei

AMD FX-Series FX-8120 CPU-Z
AMD FX-Series FX-8120
Comments (3)

You're welcome to post suggestions, corrections, your own personal AMD FX-8120 review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

4.40 GHz w/ 8-Cores Overclock... & low vCore.

2012-02-03 09:50:03
Posted by: nt300

I have this CPU Overclocked at 4.40 GHz w/ all 8-Cores enabled and with a low CPU vCore at 1.375v.

Despite its controversial benchmark reviews and such, it's still a great addition to any PC whether you plan to game or browse the internet. It does the job fast and for a great price.
Its bigger brother, upcoming Piledriver is said to be approx: 25% faster clock for clock vs. the Phenom II CPU’s. This much needed performance boost is great news for both the consumer and AMD.

Now go buy one, they are worth every penny…

4.40 GHz w/ 8-Cores Overclock... & low vCore.

HT speed

2012-03-25 09:37:46
Posted by: Neon

AMD official site at indicates System Bus is 5200 MHz.

I think they actually mean 5200 MT/s (MegaTransfers) = 2600 MHz, since maximum HT 3.0 data rate is 3200 MHz. However, you indicate HT speed is 2200 MHz. Do you know which is correct?

HT Speed

2012-04-04 05:48:05
Posted by: James K

The HT speed is 2200 MHz

Response: According to AMD specifications, 2200 MHz is a NorthBridge frequency, and HT speed is 5200 GT/s (2.6 GHz)
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