GeForce GT 645 vs Radeon Ryzen 7 4700U
GeForce GT 645
Popular choices:
Radeon Ryzen 7 4700U
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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. The GeForce GT 645 is positioned at rank #242 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 GeForce GT 645
Performance Per Dollar Radeon Ryzen 7 4700U
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The Radeon Ryzen 7 4700U is significantly newer (2025 vs 2012). The Radeon Ryzen 7 4700U likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GT 645 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The Radeon Ryzen 7 4700U is the superior choice for raw performance. It leads with a 1.9% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce GT 645.
| Insight | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1.9%) | ✅Leading raw performance (+1.9%) |
| Longevity | 🛑Obsolete Architecture (2012 / Kepler (2012−2018)) | RDNA 3.0 (2022−2026) (6nm) |
| Ecosystem | Supports FSR Upscaling | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | 💡 Excellent Perf/Watt | ⚡ Higher Power Consumption |
| Case Fit | 📏 Compact / SFF Friendly | — |
💎 Value Proposition
The GeForce GT 645 offers a compelling cost-to-performance ratio. Priced at $15 versus $450 for the Radeon Ryzen 7 4700U, it costs 97% less. While it maintains basic entry-level capabilities, this results in a 2844.2% higher cost efficiency score.
| Insight | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+2844.2%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($15) | ⚠️Higher upfront cost ($450) |
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 GeForce GT 645 and Radeon Ryzen 7 4700U
GeForce GT 645
The GeForce GT 645 is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,006 points.
Radeon Ryzen 7 4700U
The Radeon Ryzen 7 4700U is manufactured by AMD. It was released in August 8 2025. It features the RDNA 3.0 architecture. The core clock ranges from 1452 MHz to 2300 MHz. It has 1792 shading units. The thermal design power (TDP) is 43W. Manufactured using 6 nm process technology. It features 28 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 2,044 points.
Graphics Performance
The GeForce GT 645 scores 2,006 and the Radeon Ryzen 7 4700U reaches 2,044 in the G3D Mark benchmark — just a 1.9% difference, making them near-identical in rasterization performance. The GeForce GT 645 is built on Kepler while the Radeon Ryzen 7 4700U uses RDNA 3.0, both on 28 nm vs 6 nm. Shader units: 384 (GeForce GT 645) vs 1,792 (Radeon Ryzen 7 4700U). Raw compute: 0.5445 TFLOPS (GeForce GT 645) vs 16.49 TFLOPS (Radeon Ryzen 7 4700U).
| Feature | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| G3D Mark Score | 2,006 | 2,044+2% |
| Architecture | Kepler | RDNA 3.0 |
| Process Node | 28 nm | 6 nm |
| Shading Units | 384 | 1792+367% |
| Compute (TFLOPS) | 0.5445 TFLOPS | 16.49 TFLOPS+2928% |
| ROPs | 16 | 64+300% |
| TMUs | 32 | 112+250% |
| L1 Cache | 32 KB | 512 KB+1500% |
| L2 Cache | 0.25 MB | 2 MB+700% |
Advanced Features (DLSS/FSR)
| Feature | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| 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: 128-bit vs System. L2 Cache: 0.25 MB (GeForce GT 645) vs 2 MB (Radeon Ryzen 7 4700U) — the Radeon Ryzen 7 4700U has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| VRAM Capacity | 2 GB | 2 GB |
| Memory Type | GDDR5 | Shared |
| Memory Bandwidth | Unknown | System |
| Bus Width | 128-bit | System |
| L2 Cache | 0.25 MB | 2 MB+700% |
Power & Dimensions
The GeForce GT 645 draws 32W versus the Radeon Ryzen 7 4700U's 43W — a 29.3% difference. The GeForce GT 645 is more power-efficient. Recommended PSU: 350W (GeForce GT 645) vs 350W (Radeon Ryzen 7 4700U). Power connectors: PCIe-powered vs None.
| Feature | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| TDP | 32W-26% | 43W |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | None |
| Length | 145mm | — |
| Height | 111mm | — |
| Slots | 1 | — |
| Temp (Load) | 80 | — |
| Perf/Watt | 62.7+32% | 47.5 |
Value Analysis
The GeForce GT 645 launched at $99 MSRP and currently averages $15, while the Radeon Ryzen 7 4700U launched at $450 and now averages $450. The GeForce GT 645 costs 96.7% less ($435 savings) at current market prices. Performance per dollar (G3D Mark / price): 133.7 (GeForce GT 645) vs 4.5 (Radeon Ryzen 7 4700U) — the GeForce GT 645 offers 2871.1% better value. The Radeon Ryzen 7 4700U is the newer GPU (2025 vs 2012).
| Feature | GeForce GT 645 | Radeon Ryzen 7 4700U |
|---|---|---|
| MSRP | $99-78% | $450 |
| Avg Price (30d) | $15-97% | $450 |
| Performance per Dollar | 133.7+2871% | 4.5 |
| Codename | GK107 | Navi 33 |
| Release | October 1 2012 | August 8 2025 |
| Ranking | #903 | #229 |
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