
GRID T4-1Q vs Radeon HD 6990M

GRID T4-1Q
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Radeon HD 6990M
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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 GRID T4-1Q is positioned at rank 304 and the Radeon HD 6990M is on rank 233, 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 GRID T4-1Q
Performance Per Dollar Radeon HD 6990M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The GRID T4-1Q is the superior choice for raw performance. It leads with a 1.2% 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 | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| Performance | ✅Leading raw performance (+1.2%) | ❌Lower raw frame rates (-1.2%) |
| Longevity | 🛑Obsolete Architecture (2015 / Maxwell 2.0 (2014−2019)) | 🛑Obsolete Architecture (2011 / TeraScale 2 (2009−2015)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
While current pricing data is unavailable, the GRID T4-1Q 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 GRID T4-1Q and Radeon HD 6990M

GRID T4-1Q
The GRID T4-1Q is manufactured by NVIDIA. It was released in August 30 2015. It features the Maxwell 2.0 architecture. The core clock ranges from 557 MHz to 1178 MHz. It has 2048 shading units. The thermal design power (TDP) is 225W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 3,303 points.

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.
Graphics Performance
The GRID T4-1Q scores 3,303 and the Radeon HD 6990M reaches 3,264 in the G3D Mark benchmark — just a 1.2% difference, making them near-identical in rasterization performance. The GRID T4-1Q is built on Maxwell 2.0 while the Radeon HD 6990M uses TeraScale 2, both on 28 nm vs 40 nm. Shader units: 2,048 (GRID T4-1Q) vs 1,120 (Radeon HD 6990M). Raw compute: 4.825 TFLOPS (GRID T4-1Q) vs 1.602 TFLOPS (Radeon HD 6990M).
| Feature | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| G3D Mark Score | 3,303+1% | 3,264 |
| Architecture | Maxwell 2.0 | TeraScale 2 |
| Process Node | 28 nm | 40 nm |
| Shading Units | 2048+83% | 1120 |
| Compute (TFLOPS) | 4.825 TFLOPS+201% | 1.602 TFLOPS |
| ROPs | 64+100% | 32 |
| TMUs | 128+129% | 56 |
| L1 Cache | 768 KB+243% | 224 KB |
| L2 Cache | 2 MB+300% | 0.5 MB |
Advanced Features (DLSS/FSR)
| Feature | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| 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 2 GB of video memory. Bus width: 64-bit vs System. L2 Cache: 2 MB (GRID T4-1Q) vs 0.5 MB (Radeon HD 6990M) — the GRID T4-1Q has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | Shared |
| Bus Width | 64-bit | System |
| L2 Cache | 2 MB+300% | 0.5 MB |
Power & Dimensions
The GRID T4-1Q draws 225W versus the Radeon HD 6990M's 100W — a 76.9% difference. The Radeon HD 6990M is more power-efficient. Recommended PSU: 350W (GRID T4-1Q) vs 350W (Radeon HD 6990M). Power connectors: PCIe-powered vs 1x 6-pin.
| Feature | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| TDP | 225W | 100W-56% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | 1x 6-pin |
| Length | 1mm | — |
| Slots | 0 | — |
| Perf/Watt | 14.7 | 32.6+122% |
Value Analysis
The GRID T4-1Q is the newer GPU (2015 vs 2011).
| Feature | GRID T4-1Q | Radeon HD 6990M |
|---|---|---|
| MSRP | $1880 | — |
| Avg Price (30d) | $600 | — |
| Codename | GM204 | Blackcomb |
| Release | August 30 2015 | July 12 2011 |
| Ranking | #525 | #691 |
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