GTX 645 OEM 1 GB for Blender
Kepler GPU with 1 GB VRAM, below Blender’s published 2 GB minimum for current Windows/Linux releases.
Last updated: September 23, 2026
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- Blender Cycles score
- Unavailable
- VRAM
- 1 GB
- Below Blender’s VRAM minimum
- Released
- 2013
- Render support
- CUDA, OpenCL
- Power draw (TDP)
- 65 W
- Suggested system PSU
- 250 W
Technical specifications
GPU
- ArchitectureKepler
- CUDA cores576
Memory
- TypeGDDR5
- Bandwidth64 GB/s
- Bus width128-bit
Clocks & manufacturing
- Boost clock824 MHz
- Base clock824 MHz
- Process size28 nm
- GPU chipGK106S
Power & PSU sources
GPU power ratings
TDP: 65 W
Secondary source: RightNow GPU Database / TechPowerUp ↗ · Checked Sep 23, 2026 · Reference card
System power supply
Suggested PSU: 250 W
Secondary source: RightNow GPU Database / TechPowerUp ↗ · Checked Sep 23, 2026 · Reference system
Third-party source suggestion; not the manufacturer’s minimum system requirement.
GPU power ratings and whole-system PSU recommendations measure different things. Check the exact card and the source’s system assumptions.
GTX 645 OEM 1 GB Blender benchmarks
Estimated time to render one benchmark frame · Lower is faster.
Scene benchmarks unavailable
Scene benchmarks are unavailable for this GPU’s selected benchmark result.
About these estimates
Times estimate one frame of each benchmark scene from the same runs, Blender version and backend as the displayed Cycles score. The calculation uses 240 samples for Junkshop, 256 for Monster and 300 for Classroom, plus a 19% estimation buffer. Actual project render times vary. Results from different Blender versions may not be directly comparable.
Is GTX 645 OEM 1 GB good for Blender?
A concise editorial read on where this GPU looks strong, the tradeoffs to keep in mind, and who it suits best.
Tradeoffs to know
- Below the published 2 GB VRAM minimum for current Blender on Windows/Linux. Older Blender versions have different requirements. Memory capacity is only one part of GPU compatibility.
Who should choose it
- GTX 645 OEM 1 GB is not recommended as a GPU purchase for current Blender rendering.
- Below the published 2 GB VRAM minimum for current Blender on Windows/Linux. Older Blender versions have different requirements. Memory capacity is only one part of GPU compatibility.
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