
Radeon R9 255
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Radeon HD 7870M
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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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar
Performance Per Dollar Radeon HD 7870M
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon HD 7870M is the superior choice for raw performance. It leads with a 0.4% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R9 255.
| Insight | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.4%) | ✅Leading raw performance (+0.4%) |
| Longevity | 🛑Obsolete Architecture (2014 / GCN 3.0 (2014−2019)) | 🛑Obsolete Architecture (2012 / GCN 1.0 (2012−2020)) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | — |
💎 Value Proposition
While current pricing data is unavailable, the Radeon HD 7870M 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.

Counter-Strike 2
Technical Specifications
Side-by-side comparison of Radeon R9 255 and Radeon HD 7870M

Radeon R9 255
The Radeon R9 255 is manufactured by AMD. It was released in September 2 2014. It features the GCN 3.0 architecture. The core clock speed is 918 MHz. It has 1792 shading units. The thermal design power (TDP) is 190W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,501 points. Launch price was $249.

Radeon HD 7870M
The Radeon HD 7870M is manufactured by AMD. It was released in April 24 2012. It features the GCN 1.0 architecture. The core clock speed is 800 MHz. It has 640 shading units. The thermal design power (TDP) is 45W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,507 points.
Graphics Performance
The Radeon R9 255 scores 1,501 and the Radeon HD 7870M reaches 1,507 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The Radeon R9 255 is built on GCN 3.0 while the Radeon HD 7870M uses GCN 1.0, both on a 28 nm process. Shader units: 1,792 (Radeon R9 255) vs 640 (Radeon HD 7870M). Raw compute: 3.29 TFLOPS (Radeon R9 255) vs 1.024 TFLOPS (Radeon HD 7870M).
| Feature | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| G3D Mark Score | 1,501 | 1,507 |
| Architecture | GCN 3.0 | GCN 1.0 |
| Process Node | 28 nm | 28 nm |
| Shading Units | 1792+180% | 640 |
| Compute (TFLOPS) | 3.29 TFLOPS+221% | 1.024 TFLOPS |
| ROPs | 32+100% | 16 |
| TMUs | 112+180% | 40 |
| L1 Cache | 448 KB+180% | 160 KB |
| L2 Cache | 512 KB+100% | 256 KB |
Advanced Features (DLSS/FSR)
| Feature | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| 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 | AMD Anti-Lag |
Video Memory (VRAM)
Both cards feature 2 GB of video memory. Bus width: 128-bit vs System. L2 Cache: 512 KB (Radeon R9 255) vs 256 KB (Radeon HD 7870M) — the Radeon R9 255 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
| L2 Cache | 512 KB+100% | 256 KB |
Power & Dimensions
The Radeon R9 255 draws 190W versus the Radeon HD 7870M's 45W — a 123.4% difference. The Radeon HD 7870M is more power-efficient. Recommended PSU: 400W (Radeon R9 255) vs 350W (Radeon HD 7870M). Power connectors: 1x 6-pin vs 1x 6-pin.
| Feature | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| TDP | 190W | 45W-76% |
| Recommended PSU | 400W | 350W-13% |
| Power Connector | 1x 6-pin | 1x 6-pin |
| Perf/Watt | 7.9 | 33.5+324% |
Value Analysis
The Radeon R9 255 is the newer GPU (2014 vs 2012).
| Feature | Radeon R9 255 | Radeon HD 7870M |
|---|---|---|
| MSRP | $139 | — |
| Avg Price (30d) | $30 | — |
| Codename | Tonga | Heathrow |
| Release | September 2 2014 | April 24 2012 |
| Ranking | #365 | #765 |
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