Athlon 64 FX-51
AMD
PassMark
615
MSRP
$733
AVG Price
$733
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Athlon 64 FX-51 is manufactured by AMD. It was released in 2009-01-01. It is based on the SledgeHammer (2003−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 940. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 615 points. Launch price was $149.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon 64 FX-51
FPS Benchmarks
Predicted performance for Athlon 64 FX-51 across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Among Us
Call of Duty: Warzone
Counter-Strike 2
Delta Force
Euro Truck Simulator 2
Final Fantasy XIV
Fortnite
Garry's Mod
Honkai: Star Rail
League of Legends
Technical Analysis
Detailed breakdown of Athlon 64 FX-51 specifications and capabilities.
Processing Power
The Athlon 64 FX-51 is a 1-core / 1-thread processor based on the SledgeHammer (2003−2005) architecture, manufactured on a 130 nm process node. It reaches a maximum boost clock of 2.2 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 0 kB of L3 cache, plus 1 MB of L2 cache and 128 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 615, placing it in the Entry Level performance tier as a Legacy generation product.
| Specification | Athlon 64 FX-51 |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 1C / 1T |
| Max Boost ClockPeak single-core speed under boost | 2.2 GHz |
| ArchitectureCPU microarchitecture design | SledgeHammer (2003−2005) |
| Process NodeFabrication technology — smaller = more efficient | 130 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 0 kB |
| L2 CachePer-core fast cache for frequently accessed data | 1 MB |
| L1 CacheUltra-fast per-core cache | 128 kB |
| Die SizePhysical silicon area of the processor | 193 mm2 |
| Transistor CountMore transistors = more capabilities | 105 million |
| 64-bit Support | Yes |
| Windows 11 Compatible | No |
| PassMark ScoreOverall multi-threaded benchmark score | 615 |
Memory & Platform
The Athlon 64 FX-51 fits into the 940 socket and supports PCIe 1.1 with 0 total PCIe lanes for expansion cards and storage. It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers.
| Specification | Athlon 64 FX-51 |
|---|---|
| TypeDesktop or Laptop processor | desktop |
| SocketMotherboard socket required | 940 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 1.1 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 0 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR-400 |
| Max RAM CapacityMaximum installable memory | 4 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | Yes |
| Integrated GPUBuilt-in graphics processor | No |
| Compatible ChipsetsMotherboard chipsets that support this CPU | AMD 940 |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Power & Cooling
The Athlon 64 FX-51 has a rated TDP (Thermal Design Power) of 89 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.
| Specification | Athlon 64 FX-51 |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 89 Watt |
Value Analysis
At an average price of $733, the Athlon 64 FX-51 delivers 1 PassMark points per dollar. Performance ranking position: #3420 out of all indexed processors.
| Specification | Athlon 64 FX-51 |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $733 |
| Avg Price (30d)Average market price over the last 30 days | $733 |
| Launch PriceOriginal retail price at launch | $149 |
| Performance RankPosition in overall performance ranking | #3420 |
| Release DateLaunch date | 2009-01-01 |
| Release Year | 2003 |
| DesignerArchitecture designer (e.g. Intel, AMD) | AMD |
Specifications Reference
Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.
3 categories
General Information
6 specs
General Information
6 specs
| Type | desktop |
| Designer | AMD |
| Launch Price | $149 |
| Release Date | 2009-01-01 |
| Architecture Codename | SledgeHammer (2003−2005) |
| Performance Ranking Position | 3420 |
Technical Specifications
11 specs
Technical Specifications
11 specs
| Cores | 1 |
| Threads | 1 |
| Die Size | 193 mm2 |
| L1 Cache | 128 kB |
| L2 Cache | 1 MB |
| L3 Cache | 0 kB |
| Max Frequency | 2.2 GHz |
| 64-Bit Support | + |
| Transistor Count | 105 million |
| Process Technology | 130 nm |
| Windows 11 Compatible | - |
Compatibility
4 specs
Compatibility
4 specs
| Socket | 940 |
| PCIe Generation | PCIe 1.1 |
| Power Consumption (TDP) | 89 Watt |
| Max Processors In Config | 1 |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (8)
AMD (8)
Our Recommendation for Athlon 64 FX-51
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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Compare Athlon 64 FX-51
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