CPU
GPU
Radeon HD 4850 X2
Popular choices:
GeForce GT 640 Rev. 2
Popular choices:
Performance Spectrum - GPU
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. Components placed above yours deliver better value for money. The Radeon HD 4850 X2 is positioned at rank 291 and the GeForce GT 640 Rev. 2 is on rank 109, so the GeForce GT 640 Rev. 2 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon HD 4850 X2
Performance Per Dollar GeForce GT 640 Rev. 2
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce GT 640 Rev. 2 is the superior choice for raw performance. It leads with a 3.2% higher G3D Mark score. However, the Radeon HD 4850 X2 offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-3.2%) | ✅Leading raw performance (+3.2%) |
| Longevity | 🛑Obsolete Architecture (2008 / TeraScale (2005−2013)) | 🛑Obsolete Architecture (2013 / Kepler 2.0 (2013−2015)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | Standard Size (267mm) | 📏 Compact / SFF Friendly |
💎 Value Proposition
The Radeon HD 4850 X2 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the Radeon HD 4850 X2 holds the technical lead. Priced at $40 (vs $99), it costs 60% less, resulting in a 139.9% higher cost efficiency score.
| Insight | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+139.9%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($40) | ⚠️Higher upfront cost ($99) |
Performance Check
Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.
Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.
Technical Specifications
Side-by-side comparison of Radeon HD 4850 X2 and GeForce GT 640 Rev. 2
Radeon HD 4850 X2
The Radeon HD 4850 X2 is manufactured by AMD. It was released in November 7 2008. It features the TeraScale architecture. The core clock speed is 625 MHz. It has 800 ×2 shading units. The thermal design power (TDP) is 250W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 1,132 points. Launch price was $420.
GeForce GT 640 Rev. 2
The GeForce GT 640 Rev. 2 is manufactured by NVIDIA. It was released in May 29 2013. It features the Kepler 2.0 architecture. The core clock speed is 1046 MHz. It has 384 shading units. The thermal design power (TDP) is 49W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,168 points. Launch price was $89.
Graphics Performance
The Radeon HD 4850 X2 scores 1,132 and the GeForce GT 640 Rev. 2 reaches 1,168 in the G3D Mark benchmark — just a 3.2% difference, making them near-identical in rasterization performance. The Radeon HD 4850 X2 is built on TeraScale while the GeForce GT 640 Rev. 2 uses Kepler 2.0, both on 55 nm vs 28 nm. Shader units: 800 (Radeon HD 4850 X2) vs 384 (GeForce GT 640 Rev. 2). Raw compute: 1 TFLOPS ×2 (Radeon HD 4850 X2) vs 0.8033 TFLOPS (GeForce GT 640 Rev. 2).
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| G3D Mark Score | 1,132 | 1,168+3% |
| Architecture | TeraScale | Kepler 2.0 |
| Process Node | 55 nm | 28 nm |
| Shading Units | 800 ×2+108% | 384 |
| Compute (TFLOPS) | 1 TFLOPS ×2+24% | 0.8033 TFLOPS |
| ROPs | 16 ×2+100% | 8 |
| TMUs | 40 ×2+25% | 32 |
| L1 Cache | 160 KB+400% | 32 KB |
| L2 Cache | 256 KB+100% | 128 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | Standard |
Video Memory (VRAM)
The Radeon HD 4850 X2 comes with 1 GB of VRAM, while the GeForce GT 640 Rev. 2 has 512 MB. The Radeon HD 4850 X2 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 64-bit. L2 Cache: 256 KB (Radeon HD 4850 X2) vs 128 KB (GeForce GT 640 Rev. 2) — the Radeon HD 4850 X2 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| VRAM Capacity | 1 GB+100% | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 64-bit | 64-bit |
| L2 Cache | 256 KB+100% | 128 KB |
Display & API Support
DirectX support: 10.1 (Radeon HD 4850 X2) vs 12 (11_0) (GeForce GT 640 Rev. 2). Vulkan: N/A vs 1.2. OpenGL: 3.3 vs 4.6. Maximum simultaneous displays: 4 vs 3.
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| DirectX | 10.1 | 12 (11_0)+19% |
| Vulkan | N/A | 1.2 |
| OpenGL | 3.3 | 4.6+39% |
| Max Displays | 4+33% | 3 |
Media & Encoding
Hardware encoder: None (Radeon HD 4850 X2) vs NVENC (Kepler) (GeForce GT 640 Rev. 2). Decoder: UVD 2.2 vs PureVideo HD 5. Supported codecs: MPEG-2,VC-1,H.264 (Radeon HD 4850 X2) vs H.264,MPEG-2,VC-1 (GeForce GT 640 Rev. 2).
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| Encoder | None | NVENC (Kepler) |
| Decoder | UVD 2.2 | PureVideo HD 5 |
| Codecs | MPEG-2,VC-1,H.264 | H.264,MPEG-2,VC-1 |
Power & Dimensions
The Radeon HD 4850 X2 draws 250W versus the GeForce GT 640 Rev. 2's 49W — a 134.4% difference. The GeForce GT 640 Rev. 2 is more power-efficient. Recommended PSU: 500W (Radeon HD 4850 X2) vs 300W (GeForce GT 640 Rev. 2). Power connectors: 1x 6-pin + 1x 8-pin vs None. Card length: 267mm vs 145mm, occupying 2 vs 1 slots. Typical load temperature: 95 vs 65.
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| TDP | 250W | 49W-80% |
| Recommended PSU | 500W | 300W-40% |
| Power Connector | 1x 6-pin + 1x 8-pin | None |
| Length | 267mm | 145mm |
| Height | 111mm | 111mm |
| Slots | 2 | 1-50% |
| Temp (Load) | 95 | 65-32% |
| Perf/Watt | 4.5 | 23.8+429% |
Value Analysis
The Radeon HD 4850 X2 launched at $399 MSRP and currently averages $40, while the GeForce GT 640 Rev. 2 launched at $99 and now averages $99. The Radeon HD 4850 X2 costs 59.6% less ($59 savings) at current market prices. Performance per dollar (G3D Mark / price): 28.3 (Radeon HD 4850 X2) vs 11.8 (GeForce GT 640 Rev. 2) — the Radeon HD 4850 X2 offers 139.8% better value. The GeForce GT 640 Rev. 2 is the newer GPU (2013 vs 2008).
| Feature | Radeon HD 4850 X2 | GeForce GT 640 Rev. 2 |
|---|---|---|
| MSRP | $399 | $99-75% |
| Avg Price (30d) | $40-60% | $99 |
| Performance per Dollar | 28.3+140% | 11.8 |
| Codename | R700 | GK208 |
| Release | November 7 2008 | May 29 2013 |
| Ranking | #848 | #786 |
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The most powerful gpus ranked by G3D Mark benchmark scores.
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