# GeForce GT 640

> NVIDIA · Kepler

Discontinued

Canonical: https://gpuninja.com/chips/geforce-gt-640
Data as of: 2026-10-11T10:38:25Z
Path: Home › GPU chips

> **Discontinued.** Discontinued on 29 Sep 2021. This page is a preserved snapshot of the last recorded specs, prices and benchmark results.

- Specs verified: between 11 Oct 2026, 08:33 UTC and 11 Oct 2026, 10:38 UTC

## Specifications

- Vendor: NVIDIA (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Architecture: Kepler (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 06:13 UTC · checked 11 Oct 2026, 08:33 UTC)
- Die: GK107 (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Process: TSMC 28 nm (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 06:13 UTC · checked 11 Oct 2026, 08:33 UTC)
- Shader cores: 384 (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Tensor cores: None
- RT cores: None
- Memory bus: 128-bit (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Max VRAM: 4 GB (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 06:05 UTC · checked 11 Oct 2026, 08:33 UTC)
- Reference boost clock: 900 MHz (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Reference TDP: 65 W (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Host interface: PCIe 3.0 x16 (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 09:58 UTC · checked 11 Oct 2026, 10:38 UTC)
- Launch MSRP: $99 (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- Launch date: 5 Jun 2012 (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 06:05 UTC · checked 11 Oct 2026, 08:33 UTC)
- Segment: Consumer (Verified · source web.archive.org · retrieved 11 Oct 2026, 06:15 UTC · checked 11 Oct 2026, 08:33 UTC)
- PCI IDs: 10de:0fc1 (Verified · source pci-ids.ucw.cz · retrieved 11 Oct 2026, 06:16 UTC · checked 11 Oct 2026, 08:33 UTC)
- Status: Discontinued on 29 Sep 2021 (Verified · source nvidia.custhelp.com · retrieved 11 Oct 2026, 06:13 UTC · checked 11 Oct 2026, 08:33 UTC)

## Performance

- Memory bandwidth: 28.5 GB/s (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 09:58 UTC · checked 11 Oct 2026, 10:38 UTC)
- FP32 compute: 0.69 TFLOPS (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 09:58 UTC · checked 11 Oct 2026, 10:38 UTC)
- FP16 compute: Not supported
- BF16 compute: Not supported
- FP8 compute: Not supported
- FP4 compute: Not supported
- INT8 compute: Not supported

## Boards built on this chip

Board, Chip, VRAM, TDP, Length, Slots, Price, Stock

No boards recorded for this chip.

## Benchmarks

No benchmark results recorded.

## Sources

- https://web.archive.org/web/20131104093706/http://www.anandtech.com/show/6289/nvidia-launches-geforce-gtx-650-gk107-with-gddr5 — Vendor, Die, Shader cores, Memory bus, Reference boost clock, Reference TDP, Launch MSRP, Segment; last verified 11 Oct 2026, 08:33 UTC
- https://en.wikipedia.org/wiki/Kepler_(microarchitecture) — Architecture, Process; last verified 11 Oct 2026, 08:33 UTC
- https://en.wikipedia.org/wiki/GeForce_600_series — Max VRAM, Host interface, Launch date, Memory bandwidth, FP32 compute; last verified 11 Oct 2026, 10:38 UTC
- https://pci-ids.ucw.cz/v2.2/pci.ids — PCI IDs; last verified 11 Oct 2026, 08:33 UTC
- https://nvidia.custhelp.com/app/answers/detail/a_id/5202 — Status; last verified 11 Oct 2026, 08:33 UTC