
GeForce 6800 GT vs GeForce 6600 GT

GeForce 6800 GT
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GeForce 6600 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 6800 GT is positioned at rank 728 and the GeForce 6600 GT is on rank 340, 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 6800 GT
Performance Per Dollar GeForce 6600 GT
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GeForce 6600 GT is the superior choice for raw performance. It leads with a 0.7% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce 6800 GT.
| Insight | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.7%) | ✅Leading raw performance (+0.7%) |
| Longevity | 🛑Obsolete Architecture (2008 / G9x (2007−2010)) | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | Normal Efficiency | Normal Efficiency |
| Case Fit | 📏 Compact / SFF Friendly | 📏 Compact / SFF Friendly |
💎 Value Proposition
The GeForce 6800 GT offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the GeForce 6800 GT holds the technical lead. Priced at $40 (vs $50), it costs 20% less, resulting in a 24.1% higher cost efficiency score.
| Insight | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+24.1%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($40) | ⚠️Higher upfront cost ($50) |
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 6800 GT and GeForce 6600 GT

GeForce 6800 GT
The GeForce 6800 GT is manufactured by NVIDIA. It was released in July 15 2008. It features the G9x architecture. The core clock speed is 500 MHz. It has 224 shading units. The thermal design power (TDP) is 150W. Manufactured using 65 nm process technology. G3D Mark benchmark score: 142 points.

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.
Graphics Performance
The GeForce 6800 GT scores 142 and the GeForce 6600 GT reaches 143 in the G3D Mark benchmark — just a 0.7% difference, making them near-identical in rasterization performance. The GeForce 6800 GT is built on G9x while the GeForce 6600 GT uses Kepler, both on 65 nm vs 28 nm. Shader units: 224 (GeForce 6800 GT) vs 1,344 (GeForce 6600 GT).
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| G3D Mark Score | 142 | 143 |
| Architecture | G9x | Kepler |
| Process Node | 65 nm | 28 nm |
| Shading Units | 224 | 1344+500% |
Advanced Features (DLSS/FSR)
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| Upscaling Tech | FSR 1.0 (Software) | FSR 1.0 (Software) |
| Frame Generation | Not Supported | Not Supported |
| Ray Reconstruction | No | No |
| Low Latency | Standard | Standard |
Video Memory (VRAM)
Both cards feature 256 MB of GDDR5. Bus width: 64-bit vs 128-bit.
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| VRAM Capacity | 0.25 GB | 0.25 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bandwidth | Unknown | Unknown |
| Bus Width | 64-bit | 128-bit+100% |
Display & API Support
DirectX support: 9.0c (GeForce 6800 GT) vs 9.0c (GeForce 6600 GT). Vulkan: None vs None. OpenGL: 2.1 vs 2.1. Maximum simultaneous displays: 2 vs 2.
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| DirectX | 9.0c | 9.0c |
| Vulkan | None | None |
| OpenGL | 2.1 | 2.1 |
| Max Displays | 2 | 2 |
Media & Encoding
Hardware encoder: No (GeForce 6800 GT) vs No (GeForce 6600 GT). Decoder: PureVideo vs PureVideo. Supported codecs: MPEG-2 (GeForce 6800 GT) vs MPEG-2 (GeForce 6600 GT).
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| Encoder | No | No |
| Decoder | PureVideo | PureVideo |
| Codecs | MPEG-2 | MPEG-2 |
Power & Dimensions
The GeForce 6800 GT draws 150W versus the GeForce 6600 GT's 150W — a 0% difference. The GeForce 6600 GT is more power-efficient. Recommended PSU: 350W (GeForce 6800 GT) vs 350W (GeForce 6600 GT). Power connectors: Legacy vs Legacy. Card length: 216mm vs 183mm, occupying 1 vs 1 slots. Typical load temperature: 85°C vs 75°C.
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| TDP | 150W | 150W |
| Recommended PSU | 350W | 350W |
| Power Connector | Legacy | Legacy |
| Length | 216mm | 183mm |
| Height | 111mm | 111mm |
| Slots | 1 | 1 |
| Temp (Load) | 85°C | 75°C-12% |
| Perf/Watt | 0.9 | 1.0+11% |
Value Analysis
The GeForce 6800 GT launched at $399 MSRP and currently averages $40, while the GeForce 6600 GT launched at $199 and now averages $50. The GeForce 6800 GT costs 20% less ($10 savings) at current market prices. Performance per dollar (G3D Mark / price): 3.5 (GeForce 6800 GT) vs 2.9 (GeForce 6600 GT) — the GeForce 6800 GT offers 20.7% better value. The GeForce 6600 GT is the newer GPU (2012 vs 2008).
| Feature | GeForce 6800 GT | GeForce 6600 GT |
|---|---|---|
| MSRP | $399 | $199-50% |
| Avg Price (30d) | $40-20% | $50 |
| Performance per Dollar | 3.5+21% | 2.9 |
| Codename | NB9E-GTX | GK104 |
| Release | July 15 2008 | August 16 2012 |
| Ranking | #825 | #472 |
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