RadeonT Vega 8 vs GeForce GTX 645

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 RadeonT Vega 8 is significantly newer (2021 vs 2010). The RadeonT Vega 8 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 RadeonT Vega 8 is the superior choice for raw performance. It leads with a 0.7% higher G3D Mark score. However, the GeForce GTX 645 offers more VRAM, which may be beneficial for texture-heavy scenarios at higher resolutions.

Insight	RadeonT Vega 8	GeForce GTX 645
Performance	✅Leading raw performance (+0.7%)	❌Lower raw frame rates (-0.7%)
Longevity	GCN 5.1 (2018−2022) (7nm)	🛑Obsolete Architecture (2010 / Fermi (2010−2014))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	❌ Less VRAM capacity	✅ More VRAM (+100+%)
Efficiency	💡 Excellent Perf/Watt	⚡ Higher Power Consumption
Case Fit	—	📏 Compact / SFF Friendly

💎 Value Proposition

While current pricing data is unavailable, the RadeonT Vega 8 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.

RadeonT Vega 8 Benchmark Check

GeForce GTX 645 Benchmark Check

Technical Specifications

Side-by-side comparison of RadeonT Vega 8 and GeForce GTX 645

RadeonT Vega 8

The RadeonT Vega 8 is manufactured by AMD. It was released in April 13 2021. It features the GCN 5.1 architecture. The core clock ranges from 300 MHz to 1900 MHz. It has 448 shading units. The thermal design power (TDP) is 45W. Manufactured using 7 nm process technology. G3D Mark benchmark score: 1,894 points.

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.

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Graphics Performance

The RadeonT Vega 8 scores 1,894 and the GeForce GTX 645 reaches 1,880 in the G3D Mark benchmark — just a 0.7% difference, making them near-identical in rasterization performance. The RadeonT Vega 8 is built on GCN 5.1 while the GeForce GTX 645 uses Fermi, both on 7 nm vs 40 nm. Shader units: 448 (RadeonT Vega 8) vs 352 (GeForce GTX 645). Raw compute: 1.702 TFLOPS (RadeonT Vega 8) vs 0.8554 TFLOPS (GeForce GTX 645).

Feature	RadeonT Vega 8	GeForce GTX 645
G3D Mark Score	1,894	1,880
Architecture	GCN 5.1	Fermi
Process Node	7 nm	40 nm
Shading Units	448+27%	352
Compute (TFLOPS)	1.702 TFLOPS+99%	0.8554 TFLOPS
ROPs	8	32+300%
TMUs	28	44+57%

✨

Advanced Features (DLSS/FSR)

Feature	RadeonT Vega 8	GeForce GTX 645
Upscaling Tech	FSR 1.0 (Software)	FSR 2.1 (Compatible)
Frame Generation	Not Supported	FSR 3 (Compatible)
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	Standard

💾

Video Memory (VRAM)

The RadeonT Vega 8 comes with 0 MB of VRAM, while the GeForce GTX 645 has 1 GB. The GeForce GTX 645 offers 100+% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 64-bit vs 128-bit.

Feature	RadeonT Vega 8	GeForce GTX 645
VRAM Capacity	Shared System RAM	1 GB
Memory Type	GDDR5	GDDR5
Bus Width	64-bit	128-bit+100%

🖥️

Display & API Support

DirectX support: 12 (RadeonT Vega 8) vs 11.0 (GeForce GTX 645). Vulkan: 1.3 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 3.

Feature	RadeonT Vega 8	GeForce GTX 645
DirectX	12+9%	11.0
Vulkan	1.3+8%	1.2
OpenGL	4.6	4.6
Max Displays	3	3

🎬

Media & Encoding

Hardware encoder: VCN 1.0 (RadeonT Vega 8) vs NVENC (1st Gen) (GeForce GTX 645). Decoder: VCN 1.0 vs PureVideo VP5. Supported codecs: H.264,HEVC,VP9 (RadeonT Vega 8) vs MPEG-2,VC-1,H.264,MPEG-4 (GeForce GTX 645).

Feature	RadeonT Vega 8	GeForce GTX 645
Encoder	VCN 1.0	NVENC (1st Gen)
Decoder	VCN 1.0	PureVideo VP5
Codecs	H.264,HEVC,VP9	MPEG-2,VC-1,H.264,MPEG-4

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Power & Dimensions

The RadeonT Vega 8 draws 45W versus the GeForce GTX 645's 200W — a 126.5% difference. The RadeonT Vega 8 is more power-efficient. Recommended PSU: 1W (RadeonT Vega 8) vs 300W (GeForce GTX 645). Power connectors: Integrated vs None. Typical load temperature: 85°C vs 80.

Feature	RadeonT Vega 8	GeForce GTX 645
TDP	45W-78%	200W
Recommended PSU	1W-100%	300W
Power Connector	Integrated	None
Length	—	147mm
Height	—	111mm
Slots	—	1
Temp (Load)	85°C	80-6%
Perf/Watt	42.1+348%	9.4

💰

Value Analysis

The RadeonT Vega 8 launched at $0 MSRP and currently averages $0, while the GeForce GTX 645 launched at $150 and now averages $20. The RadeonT Vega 8 costs 100+% less ($20 savings) at current market prices. Performance per dollar (G3D Mark / price): Infinity (RadeonT Vega 8) vs 94.0 (GeForce GTX 645) — the RadeonT Vega 8 offers Infinity% better value. The RadeonT Vega 8 is the newer GPU (2021 vs 2010).