
RADEON X800 XT
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GeForce 8400M GS
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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 X800 XT is positioned at rank 368 and the GeForce 8400M GS is on rank 637, so the RADEON X800 XT offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar RADEON X800 XT
Performance Per Dollar GeForce 8400M GS
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The RADEON X800 XT is significantly newer (2020 vs 2014). The RADEON X800 XT likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce 8400M GS lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The GeForce 8400M GS is the superior choice for raw performance. It leads with a 6.1% higher G3D Mark score. However, the RADEON X800 XT offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.
| Insight | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| Performance | ❌Lower raw frame rates (-6.1%) | ✅Leading raw performance (+6.1%) |
| Longevity | RDNA 2.0 (2020−2025) (7nm) | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ✅ More VRAM (+100%) | ❌ Less VRAM capacity |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
The GeForce 8400M GS offers a compelling cost-to-performance ratio. Although it costs $20 (vs $20), its significant performance lead justifies the premium, offering 6.1% better value per dollar than the RADEON X800 XT.
| Insight | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+6.1%) |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 X800 XT and GeForce 8400M GS

RADEON X800 XT
The RADEON X800 XT is manufactured by AMD. It was released in October 28 2020. It features the RDNA 2.0 architecture. The core clock ranges from 1825 MHz to 2250 MHz. It has 4608 shading units. The thermal design power (TDP) is 300W. Manufactured using 7 nm process technology. It features 72 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 98 points. Launch price was $649.

GeForce 8400M GS
The GeForce 8400M GS is manufactured by NVIDIA. It was released in March 12 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 104 points.
Graphics Performance
In G3D Mark, the RADEON X800 XT scores 98 versus the GeForce 8400M GS's 104 — the GeForce 8400M GS leads by 6.1%. The RADEON X800 XT is built on RDNA 2.0 while the GeForce 8400M GS uses Maxwell, both on 7 nm vs 28 nm. Shader units: 4,608 (RADEON X800 XT) vs 384 (GeForce 8400M GS). Raw compute: 20.74 TFLOPS (RADEON X800 XT) vs 0.8632 TFLOPS (GeForce 8400M GS). Boost clocks: 2250 MHz vs 1124 MHz.
| Feature | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| G3D Mark Score | 98 | 104+6% |
| Architecture | RDNA 2.0 | Maxwell |
| Process Node | 7 nm | 28 nm |
| Shading Units | 4608+1100% | 384 |
| Compute (TFLOPS) | 20.74 TFLOPS+2303% | 0.8632 TFLOPS |
| Boost Clock | 2250 MHz+100% | 1124 MHz |
| ROPs | 128+1500% | 8 |
| TMUs | 288+1700% | 16 |
| L1 Cache | 1 MB+426% | 0.19 MB |
| L2 Cache | 4 MB+300% | 1 MB |
Advanced Features (DLSS/FSR)
| Feature | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| 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 X800 XT comes with 256 MB of VRAM, while the GeForce 8400M GS has 128 MB. The RADEON X800 XT offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 128-bit. L2 Cache: 4 MB (RADEON X800 XT) vs 1 MB (GeForce 8400M GS) — the RADEON X800 XT has significantly larger on-die cache to reduce VRAM reliance.
| Feature | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| VRAM Capacity | 0.25 GB+100% | 0.125 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 64-bit | 128-bit+100% |
| L2 Cache | 4 MB+300% | 1 MB |
Power & Dimensions
The RADEON X800 XT draws 300W versus the GeForce 8400M GS's 33W — a 160.4% difference. The GeForce 8400M GS is more power-efficient. Recommended PSU: 350W (RADEON X800 XT) vs 350W (GeForce 8400M GS). Power connectors: Legacy vs Legacy.
| Feature | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| TDP | 300W | 33W-89% |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | Legacy |
| Slots | — | 0 |
| Temp (Load) | — | 80°C |
| Perf/Watt | 0.3 | 3.2+967% |
Value Analysis
The RADEON X800 XT launched at $499 MSRP and currently averages $20, while the GeForce 8400M GS launched at $50 and now averages $20. Performance per dollar (G3D Mark / price): 4.9 (RADEON X800 XT) vs 5.2 (GeForce 8400M GS) — the GeForce 8400M GS offers 6.1% better value. The RADEON X800 XT is the newer GPU (2020 vs 2014).
| Feature | RADEON X800 XT | GeForce 8400M GS |
|---|---|---|
| MSRP | $499 | $50-90% |
| Avg Price (30d) | $20 | $20 |
| Performance per Dollar | 4.9 | 5.2+6% |
| Codename | Navi 21 | GM108 |
| Release | October 28 2020 | March 12 2014 |
| Ranking | #42 | #854 |
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