
Radeon 680M vs T400 4GB

Radeon 680M
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T400 4GB
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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 680M is positioned at rank 331 and the T400 4GB is on rank 63, so the T400 4GB offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon 680M
Performance Per Dollar T400 4GB
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon 680M is the superior choice for raw performance. It leads with a 0.9% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the T400 4GB.
| Insight | Radeon 680M | T400 4GB |
|---|---|---|
| Performance | ✅Leading raw performance (+0.9%) | ❌Lower raw frame rates (-0.9%) |
| Longevity | RDNA 2.0 (2020−2025) (6nm) | Turing (2018−2022) (12nm) |
| 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 | 📏 Compact / SFF Friendly |
💎 Value Proposition
The Radeon 680M offers a compelling cost-to-performance ratio. Priced at $80 versus $99 for the T400 4GB, it costs 19% less. While it maintains basic entry-level capabilities, this results in a 24.8% higher cost efficiency score.
| Insight | Radeon 680M | T400 4GB |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+24.8%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($80) | ⚠️Higher upfront cost ($99) |
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 680M and T400 4GB

Radeon 680M
The Radeon 680M is manufactured by AMD. It was released in January 3 2023. It features the RDNA 2.0 architecture. The core clock ranges from 2000 MHz to 2200 MHz. It has 768 shading units. The thermal design power (TDP) is 50W. Manufactured using 6 nm process technology. It features 12 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 3,836 points.
T400 4GB
The T400 4GB 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: 3,803 points.
Graphics Performance
The Radeon 680M scores 3,836 and the T400 4GB reaches 3,803 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The Radeon 680M is built on RDNA 2.0 while the T400 4GB uses Turing, both on 6 nm vs 12 nm. Shader units: 768 (Radeon 680M) vs 384 (T400 4GB). Raw compute: 3.379 TFLOPS (Radeon 680M) vs 1.094 TFLOPS (T400 4GB). Boost clocks: 2200 MHz vs 1425 MHz.
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| G3D Mark Score | 3,836 | 3,803 |
| Architecture | RDNA 2.0 | Turing |
| Process Node | 6 nm | 12 nm |
| Shading Units | 768+100% | 384 |
| Compute (TFLOPS) | 3.379 TFLOPS+209% | 1.094 TFLOPS |
| Boost Clock | 2200 MHz+54% | 1425 MHz |
| ROPs | 32+100% | 16 |
| TMUs | 48+100% | 24 |
| L1 Cache | 256 KB | 384 KB+50% |
| L2 Cache | 2 MB+100% | 1 MB |
Advanced Features (DLSS/FSR)
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| 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: 2 MB (Radeon 680M) vs 1 MB (T400 4GB) — the Radeon 680M has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | Shared | GDDR5 |
| Bus Width | System | 64-bit |
| L2 Cache | 2 MB+100% | 1 MB |
Display & API Support
DirectX support: 12_2 (Radeon 680M) vs 12_0 (T400 4GB). Maximum simultaneous displays: 0 vs 3.
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| DirectX | 12_2 | 12_0 |
| Max Displays | 0 | 3 |
Media & Encoding
Hardware encoder: VCN 3.1 (Radeon 680M) vs NVENC 7th Gen (T400 4GB). Decoder: VCN 3.1 vs NVDEC 4th Gen.
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| Encoder | VCN 3.1 | NVENC 7th Gen |
| Decoder | VCN 3.1 | NVDEC 4th Gen |
Power & Dimensions
The Radeon 680M draws 50W versus the T400 4GB's 30W — a 50% difference. The T400 4GB is more power-efficient. Recommended PSU: 350W (Radeon 680M) vs 350W (T400 4GB). Power connectors: PCIe-powered vs PCIe-powered. Card length: 1mm vs 156mm, occupying 0 vs 1 slots.
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| TDP | 50W | 30W-40% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | PCIe-powered |
| Length | 1mm | 156mm |
| Slots | 0-100% | 1 |
| Perf/Watt | 76.7 | 126.8+65% |
Value Analysis
The Radeon 680M costs 19.2% less ($19 savings) at current market prices. Performance per dollar (G3D Mark / price): 48.0 (Radeon 680M) vs 38.4 (T400 4GB) — the Radeon 680M offers 25% better value. The Radeon 680M is the newer GPU (2023 vs 2021).
| Feature | Radeon 680M | T400 4GB |
|---|---|---|
| MSRP | — | $159 |
| Avg Price (30d) | $80-19% | $99 |
| Performance per Dollar | 48.0+25% | 38.4 |
| Codename | Rembrandt+ | TU117 |
| Release | January 3 2023 | May 6 2021 |
| Ranking | #512 | #518 |
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