GeForce GTX 645 vs Radeon R7 450

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.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar

Based on actual market prices and performance benchmarks.

Performance Per Dollar

Based on actual market prices and performance benchmarks.

Performance Comparison

About G3D Mark

🏆 Chipversus Verdict

⚠️ Generational Difference

The Radeon R7 450 is significantly newer (2016 vs 2010). The Radeon R7 450 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 Radeon R7 450 is the superior choice for raw performance. It leads with a 0.4% higher G3D Mark score and 100% more VRAM (2 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	Radeon R7 450
Performance	❌Lower raw frame rates (-0.4%)	✅Leading raw performance (+0.4%)
Longevity	🛑Obsolete Architecture (2010 / Fermi (2010−2014))	🛑Obsolete Architecture (2016 / GCN 1.0 (2012−2020))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	❌ Less VRAM capacity	✅ More VRAM (+100%)
Efficiency	⚡ Higher Power Consumption	💡 Excellent Perf/Watt
Case Fit	📏 Compact / SFF Friendly	—

💎 Value Proposition

The GeForce GTX 645 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the GeForce GTX 645 holds the technical lead. Priced at $20 (vs $35), it costs 43% less, resulting in a 74.4% higher cost efficiency score.

Insight	GeForce GTX 645	Radeon R7 450
Cost Efficiency	✅Better overall value (+74.4%)	❌Lower cost efficiency
Upfront Cost	✅More affordable ($20)	⚠️Higher upfront cost ($35)

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.

GeForce GTX 645 Benchmark Check

Radeon R7 450 Benchmark Check

Technical Specifications

Side-by-side comparison of GeForce GTX 645 and Radeon R7 450

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.

Radeon R7 450

The Radeon R7 450 is manufactured by AMD. It was released in July 6 2016. It features the GCN 1.0 architecture. The core clock speed is 800 MHz. It has 512 shading units. The thermal design power (TDP) is 55W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,887 points.

⚡

Graphics Performance

The GeForce GTX 645 scores 1,880 and the Radeon R7 450 reaches 1,887 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The GeForce GTX 645 is built on Fermi while the Radeon R7 450 uses GCN 1.0, both on 40 nm vs 28 nm. Shader units: 352 (GeForce GTX 645) vs 512 (Radeon R7 450). Raw compute: 0.8554 TFLOPS (GeForce GTX 645) vs 0.8192 TFLOPS (Radeon R7 450).

Feature	GeForce GTX 645	Radeon R7 450
G3D Mark Score	1,880	1,887
Architecture	Fermi	GCN 1.0
Process Node	40 nm	28 nm
Shading Units	352	512+45%
Compute (TFLOPS)	0.8554 TFLOPS+4%	0.8192 TFLOPS
ROPs	32+100%	16
TMUs	44+38%	32
L1 Cache	704 KB+450%	128 KB
L2 Cache	512 KB+100%	256 KB

✨

Advanced Features (DLSS/FSR)

Feature	GeForce GTX 645	Radeon R7 450
Upscaling Tech	FSR 2.1 (Compatible)	FSR 1.0 (Software)
Frame Generation	FSR 3 (Compatible)	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

💾

Video Memory (VRAM)

The GeForce GTX 645 comes with 1 GB of VRAM, while the Radeon R7 450 has 2 GB. The Radeon R7 450 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. L2 Cache: 512 KB (GeForce GTX 645) vs 256 KB (Radeon R7 450) — the GeForce GTX 645 has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 645	Radeon R7 450
VRAM Capacity	1 GB	2 GB+100%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	512 KB+100%	256 KB

🔌

Power & Dimensions

The GeForce GTX 645 draws 200W versus the Radeon R7 450's 55W — a 113.7% difference. The Radeon R7 450 is more power-efficient. Recommended PSU: 300W (GeForce GTX 645) vs 250W (Radeon R7 450). Power connectors: None vs None.

Feature	GeForce GTX 645	Radeon R7 450
TDP	200W	55W-73%
Recommended PSU	300W	250W-17%
Power Connector	None	None
Length	147mm	—
Height	111mm	—
Slots	1	—
Temp (Load)	80	—
Perf/Watt	9.4	34.3+265%

💰

Value Analysis

The GeForce GTX 645 launched at $150 MSRP and currently averages $20, while the Radeon R7 450 launched at $219 and now averages $35. The GeForce GTX 645 costs 42.9% less ($15 savings) at current market prices. Performance per dollar (G3D Mark / price): 94.0 (GeForce GTX 645) vs 53.9 (Radeon R7 450) — the GeForce GTX 645 offers 74.4% better value. The Radeon R7 450 is the newer GPU (2016 vs 2010).