
GeForce 6600 GT vs Radeon X1900 GT

GeForce 6600 GT
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Radeon X1900 GT
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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 6600 GT is positioned at rank 340 and the Radeon X1900 GT is on rank 354, so the GeForce 6600 GT offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce 6600 GT
Performance Per Dollar Radeon X1900 GT
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon X1900 GT is significantly newer (2022 vs 2012). The Radeon X1900 GT likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce 6600 GT lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon X1900 GT is the superior choice for raw performance. It leads with a 2.1% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce 6600 GT.
| Insight | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| Performance | ❌Lower raw frame rates (-2.1%) | ✅Leading raw performance (+2.1%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | RDNA 3.0 (2022−2026) (5nm) |
| 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 Radeon X1900 GT offers a compelling cost-to-performance ratio. Priced at $20 versus $50 for the GeForce 6600 GT, it costs 60% less. While it maintains basic entry-level capabilities, this results in a 155.2% higher cost efficiency score.
| Insight | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+155.2%) |
| Upfront Cost | ⚠️Higher upfront cost ($50) | ✅More affordable ($20) |
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 6600 GT and Radeon X1900 GT

GeForce 6600 GT
The GeForce 6600 GT is manufactured by NVIDIA. It was released in August 16 2012. It features the Kepler architecture. The core clock ranges from 915 MHz to 980 MHz. It has 1344 shading units. The thermal design power (TDP) is 150W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 143 points. Launch price was $299.

Radeon X1900 GT
The Radeon X1900 GT is manufactured by AMD. It was released in November 3 2022. It features the RDNA 3.0 architecture. The core clock ranges from 1387 MHz to 2394 MHz. It has 5376 shading units. The thermal design power (TDP) is 300W. Manufactured using 5 nm process technology. It features 84 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 146 points. Launch price was $899.
Graphics Performance
The GeForce 6600 GT scores 143 and the Radeon X1900 GT reaches 146 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The GeForce 6600 GT is built on Kepler while the Radeon X1900 GT uses RDNA 3.0, both on 28 nm vs 5 nm. Shader units: 1,344 (GeForce 6600 GT) vs 5,376 (Radeon X1900 GT). Raw compute: 2.634 TFLOPS (GeForce 6600 GT) vs 51.48 TFLOPS (Radeon X1900 GT). Boost clocks: 980 MHz vs 2394 MHz.
| Feature | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| G3D Mark Score | 143 | 146+2% |
| Architecture | Kepler | RDNA 3.0 |
| Process Node | 28 nm | 5 nm |
| Shading Units | 1344 | 5376+300% |
| Compute (TFLOPS) | 2.634 TFLOPS | 51.48 TFLOPS+1854% |
| Boost Clock | 980 MHz | 2394 MHz+144% |
| ROPs | 24 | 192+700% |
| TMUs | 112 | 336+200% |
| L1 Cache | 0.11 MB | 3 MB+2627% |
| L2 Cache | 0.38 MB | 6 MB+1479% |
Advanced Features (DLSS/FSR)
| Feature | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| 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 256 MB of GDDR5. Bus width: 128-bit vs 64-bit. L2 Cache: 0.38 MB (GeForce 6600 GT) vs 6 MB (Radeon X1900 GT) — the Radeon X1900 GT has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| VRAM Capacity | 0.25 GB | 0.25 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
| L2 Cache | 0.38 MB | 6 MB+1479% |
Power & Dimensions
The GeForce 6600 GT draws 150W versus the Radeon X1900 GT's 300W — a 66.7% difference. The GeForce 6600 GT is more power-efficient. Recommended PSU: 350W (GeForce 6600 GT) vs 350W (Radeon X1900 GT). Power connectors: Legacy vs PCIe-powered.
| Feature | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| TDP | 150W-50% | 300W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | PCIe-powered |
| Length | 183mm | — |
| Height | 111mm | — |
| Slots | 1 | — |
| Temp (Load) | 75°C | — |
| Perf/Watt | 1.0+100% | 0.5 |
Value Analysis
The GeForce 6600 GT launched at $199 MSRP and currently averages $50, while the Radeon X1900 GT launched at $299 and now averages $20. The Radeon X1900 GT costs 60% less ($30 savings) at current market prices. Performance per dollar (G3D Mark / price): 2.9 (GeForce 6600 GT) vs 7.3 (Radeon X1900 GT) — the Radeon X1900 GT offers 151.7% better value. The Radeon X1900 GT is the newer GPU (2022 vs 2012).
| Feature | GeForce 6600 GT | Radeon X1900 GT |
|---|---|---|
| MSRP | $199-33% | $299 |
| Avg Price (30d) | $50 | $20-60% |
| Performance per Dollar | 2.9 | 7.3+152% |
| Codename | GK104 | Navi 31 |
| Release | August 16 2012 | November 3 2022 |
| Ranking | #472 | #21 |
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