GT 640 for Blender

Blender score 36
Entry-level speed
Light VRAM
GT 6 series

Kepler GPU best suited to lighter Blender scenes, learning workflows, and budget-conscious rendering setups.

Last updated: May 26, 2026

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Blender benchmark score

36

Entry-level speed — fine for learning and lighter scenes.

VRAM

2 GB

Limited — best for simpler scenes and lighter workflows.

CUDA cores

384

Lower core count — adequate for lighter rendering workloads.

Architecture

Kepler

Older architecture — check benchmark scores for a practical performance picture.

Memory bandwidth

28.5 GB/s

Lower bandwidth may become a bottleneck in texture-heavy or complex scenes.

Boost clock

902 MHz

Lower clock speed — typical of older or workstation-class GPUs.

Render support

CUDA

CUDA provides the primary GPU rendering path in Blender Cycles.

TDP

65 W

Low power — easy to cool and efficient for smaller builds.

Release year

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 estimates how many seconds this GPU takes to render one frame of each standard Blender benchmark scene, so you can compare practical rendering speed at a glance.

Blender score 36
seconds
Estimated time to render one benchmark frame. Lower is faster.
CUDA
Junkshop
8156.71s
Monster
799.31s
Classroom
1873.27s
0s9385s

These are single-frame estimates derived from Blender Open Data benchmark medians at the scene sample counts, not full-animation render times or guarantees for every real project.

View Blender Open Data source

Is 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

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