Radeon HD 6990M Crossfire vs T400
Radeon HD 6990M Crossfire
Popular choices:
T400
Popular choices:
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 Crossfire is positioned at rank 479 and the T400 is on rank 80, so the T400 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 Crossfire
Performance Per Dollar T400
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The T400 is significantly newer (2021 vs 2011). The T400 likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The Radeon HD 6990M Crossfire lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The T400 is the superior choice for raw performance. It leads with a 3.1% higher G3D Mark score and 100% more VRAM (4 GB vs 2 GB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon HD 6990M Crossfire.
| Insight | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-3.1%) | ✅Leading raw performance (+3.1%) |
| Longevity | 🛑Obsolete Architecture (2011 / Terascale 2 (2009−2015)) | Turing (2018−2022) (12nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+100%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
The Radeon HD 6990M Crossfire offers a compelling cost-to-performance ratio. Priced at $150 versus $179 for the T400, it costs 16% less. While it maintains basic entry-level capabilities, this results in a 15.7% higher cost efficiency score.
| Insight | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+15.7%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($150) | ⚠️Higher upfront cost ($179) |
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 Crossfire and T400
Radeon HD 6990M Crossfire
The Radeon HD 6990M Crossfire 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 2240 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 3,500 points.
T400
The T400 is manufactured by an unknown manufacturer. It was released in May 6 2021. It features the Turing architecture. The core clock ranges from 420 MHz to 1425 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 12 nm process technology. G3D Mark benchmark score: 3,609 points.
Graphics Performance
The Radeon HD 6990M Crossfire scores 3,500 and the T400 reaches 3,609 in the G3D Mark benchmark — just a 3.1% difference, making them near-identical in rasterization performance. The Radeon HD 6990M Crossfire is built on Terascale 2 while the T400 uses Turing, both on 40 nm vs 12 nm. Shader units: 2,240 (Radeon HD 6990M Crossfire) vs 384 (T400).
| Feature | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| G3D Mark Score | 3,500 | 3,609+3% |
| Architecture | Terascale 2 | Turing |
| Process Node | 40 nm | 12 nm |
| Shading Units | 2240+483% | 384 |
Advanced Features (DLSS/FSR)
| Feature | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| 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)
The Radeon HD 6990M Crossfire comes with 2 GB of VRAM, while the T400 has 4 GB. The T400 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit.
| Feature | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| VRAM Capacity | 2 GB | 4 GB+100% |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit+100% | 64-bit |
Power & Dimensions
The Radeon HD 6990M Crossfire draws 50W versus the T400's 30W — a 50% difference. The T400 is more power-efficient. Recommended PSU: 350W (Radeon HD 6990M Crossfire) vs 350W (T400). Power connectors: 1x 6-pin vs PCIe-powered.
| Feature | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| TDP | 50W | 30W-40% |
| Recommended PSU | 350W | 350W |
| Power Connector | 1x 6-pin | PCIe-powered |
| Length | 0mm | — |
| Height | 0mm | — |
| Slots | 0 | — |
| Temp (Load) | 90 | — |
| Perf/Watt | 70.0 | 120.3+72% |
Value Analysis
The Radeon HD 6990M Crossfire launched at $699 MSRP and currently averages $150, while the T400 launched at $180 and now averages $179. The Radeon HD 6990M Crossfire costs 16.2% less ($29 savings) at current market prices. Performance per dollar (G3D Mark / price): 23.3 (Radeon HD 6990M Crossfire) vs 20.2 (T400) — the Radeon HD 6990M Crossfire offers 15.3% better value. The T400 is the newer GPU (2021 vs 2011).
| Feature | Radeon HD 6990M Crossfire | T400 |
|---|---|---|
| MSRP | $699 | $180-74% |
| Avg Price (30d) | $150-16% | $179 |
| Performance per Dollar | 23.3+15% | 20.2 |
| Codename | Blackcomb XTX | TU117 |
| Release | July 12 2011 | May 6 2021 |
| Ranking | #517 | #532 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
You May Also Compare
Similar GPU comparisons based on Radeon HD 6990M Crossfire and T400
