
GeForce 8400 vs RADEON X800GT

GeForce 8400
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RADEON X800GT
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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 GeForce 8400 is positioned at rank 657 and the RADEON X800GT is on rank 352, so the RADEON X800GT offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce 8400
Performance Per Dollar RADEON X800GT
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The RADEON X800GT is significantly newer (2020 vs 2014). The RADEON X800GT likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce 8400 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The GeForce 8400 is the superior choice for raw performance. It leads with a 1.3% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the RADEON X800GT.
| Insight | GeForce 8400 | RADEON X800GT |
|---|---|---|
| Performance | ✅Leading raw performance (+1.3%) | ❌Lower raw frame rates (-1.3%) |
| Longevity | 🛑Obsolete Architecture (2014 / Maxwell (2014−2017)) | RDNA 2.0 (2020−2025) (7nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The GeForce 8400 offers a compelling cost-to-performance ratio. Priced at $5 versus $10 for the RADEON X800GT, it costs 50% less. While it maintains basic entry-level capabilities, this results in a 102.5% higher cost efficiency score.
| Insight | GeForce 8400 | RADEON X800GT |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+102.5%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($5) | ⚠️Higher upfront cost ($10) |
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 GeForce 8400 and RADEON X800GT

GeForce 8400
The GeForce 8400 is manufactured by NVIDIA. It was released in March 17 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: 81 points.

RADEON X800GT
The RADEON X800GT is manufactured by AMD. It was released in October 28 2020. It features the RDNA 2.0 architecture. The core clock ranges from 1700 MHz to 2105 MHz. It has 3840 shading units. The thermal design power (TDP) is 250W. Manufactured using 7 nm process technology. It features 60 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 80 points. Launch price was $579.
Graphics Performance
The GeForce 8400 scores 81 and the RADEON X800GT reaches 80 in the G3D Mark benchmark — just a 1.3% difference, making them near-identical in rasterization performance. The GeForce 8400 is built on Maxwell while the RADEON X800GT uses RDNA 2.0, both on 28 nm vs 7 nm. Shader units: 384 (GeForce 8400) vs 3,840 (RADEON X800GT). Raw compute: 0.8632 TFLOPS (GeForce 8400) vs 16.17 TFLOPS (RADEON X800GT). Boost clocks: 1124 MHz vs 2105 MHz.
| Feature | GeForce 8400 | RADEON X800GT |
|---|---|---|
| G3D Mark Score | 81+1% | 80 |
| Architecture | Maxwell | RDNA 2.0 |
| Process Node | 28 nm | 7 nm |
| Shading Units | 384 | 3840+900% |
| Compute (TFLOPS) | 0.8632 TFLOPS | 16.17 TFLOPS+1773% |
| Boost Clock | 1124 MHz | 2105 MHz+87% |
| ROPs | 8 | 96+1100% |
| TMUs | 16 | 240+1400% |
| L1 Cache | 192 KB | 768 KB+300% |
| L2 Cache | 1 MB | 4 MB+300% |
Advanced Features (DLSS/FSR)
| Feature | GeForce 8400 | RADEON X800GT |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | AMD Anti-Lag |
Video Memory (VRAM)
Both cards feature 512 MB of GDDR5. Bus width: 128-bit vs 64-bit. L2 Cache: 1 MB (GeForce 8400) vs 4 MB (RADEON X800GT) — the RADEON X800GT has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce 8400 | RADEON X800GT |
|---|---|---|
| VRAM Capacity | 0.5 GB | 0.5 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 1 MB | 4 MB+300% |
Power & Dimensions
The GeForce 8400 draws 33W versus the RADEON X800GT's 250W — a 153.4% difference. The GeForce 8400 is more power-efficient. Recommended PSU: 350W (GeForce 8400) vs 350W (RADEON X800GT). Power connectors: Legacy vs Legacy.
| Feature | GeForce 8400 | RADEON X800GT |
|---|---|---|
| TDP | 33W-87% | 250W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | Legacy |
| Length | 170mm | — |
| Height | 106mm | — |
| Slots | 1 | — |
| Temp (Load) | 65°C | — |
| Perf/Watt | 2.5+733% | 0.3 |
Value Analysis
The GeForce 8400 launched at $45 MSRP and currently averages $5, while the RADEON X800GT launched at $160 and now averages $10. The GeForce 8400 costs 50% less ($5 savings) at current market prices. Performance per dollar (G3D Mark / price): 16.2 (GeForce 8400) vs 8.0 (RADEON X800GT) — the GeForce 8400 offers 102.5% better value. The RADEON X800GT is the newer GPU (2020 vs 2014).
| Feature | GeForce 8400 | RADEON X800GT |
|---|---|---|
| MSRP | $45-72% | $160 |
| Avg Price (30d) | $5-50% | $10 |
| Performance per Dollar | 16.2+102% | 8.0 |
| Codename | GM108 | Navi 21 |
| Release | March 17 2014 | October 28 2020 |
| Ranking | #850 | #65 |
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