GeForce GTX 645 vs GeForce RTX 4070
GeForce GTX 645
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GeForce RTX 4070
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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 GeForce RTX 4070
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
⚠️ Generational Difference
The GeForce RTX 4070 is significantly newer (2023 vs 2010). The GeForce RTX 4070 likely supports modern features like Ray Tracing, Tensor Cores, and DLSS/FSR upscaling, which act as force multipliers for performance. The GeForce GTX 645 lacks this hardware feature set, limiting its longevity in modern titles despite any raw power similarities.
🚀 Performance Leadership
The GeForce RTX 4070 is the superior choice for raw performance. It leads with a 1331.9% higher G3D Mark score and 1100% more VRAM (12 GB vs 1 GB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the GeForce GTX 645.
| Insight | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-1331.9%) | ✅Leading raw performance (+1331.9%) |
| Longevity | 🛑Obsolete Architecture (2010 / Fermi (2010−2014)) | 🏆Elite Architecture (Ada Lovelace (2022−2024) / 5nm) |
| Ecosystem | Supports FSR Upscaling | ✨ DLSS 3/4 + Frame Gen Support |
| VRAM | ❌ Less VRAM capacity | 🎮 High Capacity (12 GB) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | 📏 Compact / SFF Friendly | Standard Size (304mm) |
💎 Value Proposition
The GeForce GTX 645 offers a compelling cost-to-performance ratio. Priced at $20 versus $550 for the GeForce RTX 4070, it costs 96% less. While it maintains basic entry-level capabilities, this results in a 92.1% higher cost efficiency score.
| Insight | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| Cost Efficiency | ✅Better overall value (+92.1%) | ❌Lower cost efficiency |
| Upfront Cost | ✅More affordable ($20) | ⚠️Higher upfront cost ($550) |
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 GTX 645 and GeForce RTX 4070
GeForce GTX 645
The GeForce GTX 645 is manufactured by NVIDIA. It was released in May 31 2010. It features the Fermi architecture. The core clock speed is 607 MHz. It has 352 shading units. The thermal design power (TDP) is 200W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,880 points. Launch price was $279.
GeForce RTX 4070
The GeForce RTX 4070 is manufactured by NVIDIA. It was released in April 12 2023. It features the Ada Lovelace architecture. The core clock ranges from 1920 MHz to 2475 MHz. It has 5888 shading units. The thermal design power (TDP) is 200W. Manufactured using 5 nm process technology. It features 46 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 26,919 points. Launch price was $599.
Graphics Performance
In G3D Mark, the GeForce GTX 645 scores 1,880 versus the GeForce RTX 4070's 26,919 — the GeForce RTX 4070 leads by 1331.9%. The GeForce GTX 645 is built on Fermi while the GeForce RTX 4070 uses Ada Lovelace, both on 40 nm vs 5 nm. Shader units: 352 (GeForce GTX 645) vs 5,888 (GeForce RTX 4070). Raw compute: 0.8554 TFLOPS (GeForce GTX 645) vs 29.15 TFLOPS (GeForce RTX 4070).
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| G3D Mark Score | 1,880 | 26,919+1332% |
| Architecture | Fermi | Ada Lovelace |
| Process Node | 40 nm | 5 nm |
| Shading Units | 352 | 5888+1573% |
| Compute (TFLOPS) | 0.8554 TFLOPS | 29.15 TFLOPS+3308% |
| ROPs | 32 | 64+100% |
| TMUs | 44 | 184+318% |
| L1 Cache | 0.69 MB | 5.8 MB+741% |
| L2 Cache | 0.5 MB | 36 MB+7100% |
Advanced Features (DLSS/FSR)
A critical advantage for the GeForce RTX 4070 is support for DLSS 3 Frame Gen. This allows it to generate entire frames using AI/Algorithms, essentially doubling the frame rate in CPU-bound scenarios or heavy ray-tracing titles. The GeForce GTX 645 lacks specific hardware/driver support for this native frame generation tier.
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| Upscaling Tech | FSR 2.1 (Compatible) | DLSS 3.5 |
| Frame Generation | FSR 3 (Compatible) | DLSS 3.0 (Native) |
| Ray Reconstruction | No | Yes (DLSS 3.5) |
| Low Latency | Standard | NVIDIA Reflex |
Video Memory (VRAM)
The GeForce GTX 645 comes with 1 GB of VRAM, while the GeForce RTX 4070 has 12 GB. The GeForce RTX 4070 offers 1100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 192-bit. L2 Cache: 0.5 MB (GeForce GTX 645) vs 36 MB (GeForce RTX 4070) — the GeForce RTX 4070 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| VRAM Capacity | 1 GB | 12 GB+1100% |
| Memory Type | GDDR5 | GDDR6X |
| Memory Bandwidth | Unknown | 504 GB/s |
| Bus Width | 128-bit | 192-bit+50% |
| L2 Cache | 0.5 MB | 36 MB+7100% |
Display & API Support
DirectX support: 11.0 (GeForce GTX 645) vs 12.2 (GeForce RTX 4070). Vulkan: 1.2 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 4.
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| DirectX | 11.0 | 12.2+11% |
| Vulkan | 1.2 | 1.3+8% |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 3 | 4+33% |
Media & Encoding
Hardware encoder: NVENC (1st Gen) (GeForce GTX 645) vs 8th Gen NVENC (2x) (GeForce RTX 4070). Decoder: PureVideo VP5 vs 5th Gen NVDEC. Supported codecs: MPEG-2,VC-1,H.264,MPEG-4 (GeForce GTX 645) vs MPEG-2,H.264,HEVC,VP9,AV1 (GeForce RTX 4070).
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| Encoder | NVENC (1st Gen) | 8th Gen NVENC (2x) |
| Decoder | PureVideo VP5 | 5th Gen NVDEC |
| Codecs | MPEG-2,VC-1,H.264,MPEG-4 | MPEG-2,H.264,HEVC,VP9,AV1 |
Power & Dimensions
The GeForce GTX 645 draws 200W versus the GeForce RTX 4070's 200W — a 0% difference. The GeForce RTX 4070 is more power-efficient. Recommended PSU: 300W (GeForce GTX 645) vs 650W (GeForce RTX 4070). Power connectors: None vs 8-pin. Card length: 147mm vs 304mm, occupying 1 vs 3 slots. Typical load temperature: 80 vs 80°C.
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| TDP | 200W | 200W |
| Recommended PSU | 300W-54% | 650W |
| Power Connector | None | 8-pin |
| Length | 147mm | 304mm |
| Height | 111mm | 137mm |
| Slots | 1-67% | 3 |
| Temp (Load) | 80 | 80°C |
| Perf/Watt | 9.4 | 134.6+1332% |
Value Analysis
The GeForce GTX 645 launched at $150 MSRP and currently averages $20, while the GeForce RTX 4070 launched at $599 and now averages $550. The GeForce GTX 645 costs 96.4% less ($530 savings) at current market prices. Performance per dollar (G3D Mark / price): 94.0 (GeForce GTX 645) vs 48.9 (GeForce RTX 4070) — the GeForce GTX 645 offers 92.2% better value. The GeForce RTX 4070 is the newer GPU (2023 vs 2010).
| Feature | GeForce GTX 645 | GeForce RTX 4070 |
|---|---|---|
| MSRP | $150-75% | $599 |
| Avg Price (30d) | $20-96% | $550 |
| Performance per Dollar | 94.0+92% | 48.9 |
| Codename | GF100 | AD104 |
| Release | May 31 2010 | April 12 2023 |
| Ranking | #618 | #32 |
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