NVIDIA GeForce GT 640
Kepler GPU best suited to lighter Blender scenes, learning workflows, and budget-conscious rendering setups.
Last updated: March 31, 2026
36
Entry-level speed — fine for learning and lighter scenes.
2 GB
Limited — best for simpler scenes and lighter workflows.
384
Lower core count — adequate for lighter rendering workloads.
Kepler
Older architecture — check benchmark scores for a practical performance picture.
28.5 GB/s
Lower bandwidth may become a bottleneck in texture-heavy or complex scenes.
902 MHz
Lower clock speed — typical of older or workstation-class GPUs.
CUDA
CUDA provides the primary GPU rendering path in Blender Cycles.
65 W
Low power — easy to cool and efficient for smaller builds.
2012
More technical details
Core specs
- Base clock: 902 MHz
- Process size: 28 nm
Memory specs
- Memory type: DDR3
- Memory bus: 128-bit
Benchmark performance
This chart gives a compact estimate of how this GPU handles Blender benchmark scenes, so you can compare practical rendering speed without reading raw benchmark tables.
These timings are derived from Blender Open Data benchmark medians and should be treated as comparative estimates, not guaranteed real-project render times.
View Blender Open Data sourceIs GT 640 good for Blender?
A concise editorial read on where this GPU looks strong, the tradeoffs to keep in mind, and who it suits best.
What stands out
- Kepler Architecture
- 28 nm Process Size
- 384 CUDA cores
- Base and Boost Clock at 902 MHz
Tradeoffs to know
- Limited VRAM at 2 GB
- Not suitable for complex scenes
Who should choose it
- Affordable option for beginners
- Handles basic rendering tasks
Compare GT 640 to…
Pick another GPU to see a side-by-side comparison.
Boost Your Blender Renders with Renderjuice
Renderjuice offers cloud-based GPU rentals to supercharge your Blender rendering tasks.
Related GPUs
These are nearby alternatives if you want something from the same generation, a similar class of card, or a similar Blender performance tier.
Same Generation
Other GPUs from the same lineup generation, useful when you want nearby options in the same family.
Same Tier
Cards that sit in a similar tier class, often helpful for older-vs-newer generation comparisons.
Similar Blender Performance
Nearby benchmark alternatives when you care more about practical Blender performance than branding.