
Phenom X4 9750B
AMD
PassMark
1,520
MSRP
$215
AVG Price
$34
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 Phenom X4 9750B is manufactured by AMD. It was released in 2009-01-01. It is based on the Agena (2007−2008) architecture. It features 4 cores and 4 threads. Max frequency: 2.4 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,520 points. Launch price was $149.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Phenom X4 9750B is positioned at rank #1047 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 Phenom X4 9750B
FPS Benchmarks
Predicted performance for Phenom X4 9750B across popular games. Tested paired with RTX 4090 to isolate CPU performance.

Path of Exile 2

Counter-Strike 2

League of Legends

Valorant
Technical Analysis
Detailed breakdown of Phenom X4 9750B specifications and capabilities.
Processing Power
The Phenom X4 9750B is a 4-core / 4-thread processor based on the Agena (2007−2008) architecture, manufactured on a 65 nm process node. It reaches a maximum boost clock of 2.4 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 2 MB (total) of L3 cache, plus 512 kB (per core) of L2 cache and 128 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 1,520, placing it in the Entry Level performance tier as a Legacy generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 300, while multi-core reaches 1,000.
| Specification | Phenom X4 9750B |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 4C / 4T |
| Max Boost ClockPeak single-core speed under boost | 2.4 GHz |
| ArchitectureCPU microarchitecture design | Agena (2007−2008) |
| Process NodeFabrication technology — smaller = more efficient | 65 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 2 MB (total) |
| L2 CachePer-core fast cache for frequently accessed data | 512 kB (per core) |
| L1 CacheUltra-fast per-core cache | 128 kB (per core) |
| Die SizePhysical silicon area of the processor | 285 mm2 |
| Transistor CountMore transistors = more capabilities | 450 million |
| 64-bit Support | Yes |
| Windows 11 Compatible | No |
| PassMark ScoreOverall multi-threaded benchmark score | 1,520 |
| Geekbench 6 SingleSingle-core performance — most relevant for gaming | 300 |
| Geekbench 6 MultiMulti-core parallel workload performance | 1,000 |
Memory & Platform
The Phenom X4 9750B fits into the AM2+ socket and supports PCIe 2.0 with 16 total PCIe lanes for expansion cards and storage. Integrated graphics: None — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.
| Specification | Phenom X4 9750B |
|---|---|
| TypeDesktop or Laptop processor | desktop |
| SocketMotherboard socket required | AM2+ |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 2.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 16 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR2-1066 |
| Max RAM CapacityMaximum installable memory | 8 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | No |
| Integrated GPUBuilt-in graphics processor | None |
| Compatible ChipsetsMotherboard chipsets that support this CPU | AM2+,AM2 |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
The Phenom X4 9750B is primarily designed for Legacy Desktop. Virtualization: AMD-V — enables running virtual machines efficiently (important for development and server workloads).
| Specification | Phenom X4 9750B |
|---|---|
| Primary Use CaseIntended workload category | Legacy Desktop |
| OverclockingWhether CPU clock can be manually increased | 🔒 Locked |
| AVX-512Advanced vector instructions for AI/ML workloads | ❌ Not Supported |
| VirtualizationHardware-assisted virtualization technology | AMD-V |
Power & Cooling
The Phenom X4 9750B has a rated TDP (Thermal Design Power) of 95 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: Standard.
| Specification | Phenom X4 9750B |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 95 Watt |
| Included CoolerStock cooler bundled in the box | None |
| Recommended CoolerSuggested aftermarket cooling solution | Standard |
Value Analysis
At an average price of $34 (MSRP: $215), the Phenom X4 9750B delivers 45 PassMark points per dollar. It currently holds Rank #1047 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #2795 out of all indexed processors.
| Specification | Phenom X4 9750B |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $215 |
| Avg Price (30d)Average market price over the last 30 days | $34 |
| Launch PriceOriginal retail price at launch | $149 |
| Cost-Benefit RankPosition in overall value ranking | #1047 |
| Performance RankPosition in overall performance ranking | #2795 |
| Release DateLaunch date | 2009-01-01 |
| Release Year | 2008 |
| DesignerArchitecture designer (e.g. Intel, AMD) | AMD |
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