
Radeon HD 6990M vs GRID P100-8Q

Radeon HD 6990M
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GRID P100-8Q
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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 HD 6990M is positioned at rank 233 and the GRID P100-8Q is on rank 384, so the Radeon HD 6990M 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 6990M
Performance Per Dollar GRID P100-8Q
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GRID P100-8Q is the superior choice for raw performance. It leads with a 0.1% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 6990M.
| Insight | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.1%) | ✅Leading raw performance (+0.1%) |
| Longevity | 🛑Obsolete Architecture (2011 / TeraScale 2 (2009−2015)) | 🛑Obsolete Architecture (2016 / Maxwell (2014−2017)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the GRID P100-8Q remains the clear technical winner. Check real-time availability to determine if the performance gap justifies the market price.
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 6990M and GRID P100-8Q

Radeon HD 6990M
The Radeon HD 6990M is manufactured by AMD. It was released in July 12 2011. It features the TeraScale 2 architecture. The core clock speed is 715 MHz. It has 1120 shading units. The thermal design power (TDP) is 100W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 3,264 points.

GRID P100-8Q
The GRID P100-8Q is manufactured by NVIDIA. It was released in May 18 2016. It features the Maxwell architecture. The core clock ranges from 1033 MHz to 1306 MHz. It has 640 shading units. The thermal design power (TDP) is 225W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 3,267 points.
Graphics Performance
The Radeon HD 6990M scores 3,264 and the GRID P100-8Q reaches 3,267 in the G3D Mark benchmark — just a 0.1% difference, making them near-identical in rasterization performance. The Radeon HD 6990M is built on TeraScale 2 while the GRID P100-8Q uses Maxwell, both on 40 nm vs 28 nm. Shader units: 1,120 (Radeon HD 6990M) vs 640 (GRID P100-8Q). Raw compute: 1.602 TFLOPS (Radeon HD 6990M) vs 1.672 TFLOPS (GRID P100-8Q).
| Feature | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| G3D Mark Score | 3,264 | 3,267 |
| Architecture | TeraScale 2 | Maxwell |
| Process Node | 40 nm | 28 nm |
| Shading Units | 1120+75% | 640 |
| Compute (TFLOPS) | 1.602 TFLOPS | 1.672 TFLOPS+4% |
| ROPs | 32+100% | 16 |
| TMUs | 56+40% | 40 |
| L1 Cache | 224 KB | 320 KB+43% |
| L2 Cache | 0.5 MB | 2 MB+300% |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| 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)
Both cards feature 2 GB of video memory. Bus width: System vs 64-bit. L2 Cache: 0.5 MB (Radeon HD 6990M) vs 2 MB (GRID P100-8Q) — the GRID P100-8Q has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | Shared | GDDR5 |
| Bus Width | System | 64-bit |
| L2 Cache | 0.5 MB | 2 MB+300% |
Power & Dimensions
The Radeon HD 6990M draws 100W versus the GRID P100-8Q's 225W — a 76.9% difference. The Radeon HD 6990M is more power-efficient. Recommended PSU: 350W (Radeon HD 6990M) vs 350W (GRID P100-8Q). Power connectors: 1x 6-pin vs PCIe-powered.
| Feature | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| TDP | 100W-56% | 225W |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | PCIe-powered |
| Perf/Watt | 32.6+125% | 14.5 |
Value Analysis
The GRID P100-8Q is the newer GPU (2016 vs 2011).
| Feature | Radeon HD 6990M | GRID P100-8Q |
|---|---|---|
| MSRP | — | $7374 |
| Avg Price (30d) | — | $550 |
| Codename | Blackcomb | GM107 |
| Release | July 12 2011 | May 18 2016 |
| Ranking | #691 | #622 |
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