NVIDIA · GeForce GT

NVIDIA GeForce GT 645M

The NVIDIA GeForce GT 645M is a graphics card released on October 1, 2012, built on the Kepler architecture. It has 2 GB of video memory on a 128-bit bus, a boost clock of 710 MHz and a 32 W board power rating. It scores 941 in the PassMark G3D benchmark. It supports DirectX 12, OpenGL 4.5 and Vulkan 1.2.

KeplerGK107 (N13P-GS)

6/10 key specs recorded · 24 facts

Depth: 31 recorded fields, 5 PassMark workloads

Specification data last verified October 1, 2026 against PassMark Videocard Benchmark and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 6 of 10 tracked specifications recorded.

PassMark Videocard Benchmark Wikipedia GPU list tables (wikigrid-2026-09)PassMark Videocard Benchmark

Shading units

n/a

Memory

2 GB

128-bit

Boost clock

n/a

710 MHz base

Board power

32 W

Performance

The NVIDIA GeForce GT 645M scores 941 in the PassMark G3D benchmark, higher than 53.1% of the 2,658 GPUs benchmarked (PassMark rank #1,425), measured across 323 submitted results. Its PassMark G2D score is 167.

PassMark G3D Mark

941

Rank #1,425
Faster than 53.1% of 2,658 GPUs
323 samples

0relative to the fastest GPU on record (41,928)

PassMark workload tests

DirectX 9 14 fps

reference: fastest recorded 526 fps · faster than 27.5% of 1,675 GPUs

DirectX 10 3 fps

reference: fastest recorded 231 fps · faster than 26.9% of 1,602 GPUs

DirectX 11 7 fps

reference: fastest recorded 362 fps · faster than 23.3% of 1,430 GPUs

DirectX 12 6 fps

reference: fastest recorded 213 fps · faster than 18.8% of 1,274 GPUs

GPU Compute 472 ops/s

reference: fastest recorded 26,591 ops/s · faster than 25.6% of 1,447 GPUs

Averages of PassMark PerformanceTest submissions; frames/sec are PassMark test-scene rates, not game FPS. Tests PassMark does not report for this card are omitted. PassMark listing

In the PassMark workload tests the NVIDIA GeForce GT 645M averages DirectX 9 14 fps, DirectX 10 3 fps, DirectX 11 7 fps, DirectX 12 6 fps and GPU Compute 472 ops/s, across 323 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

As stated by PassMark

Category Mobile

Bus interface PCIe 3.0 x16

Max memory 2 GB

Core clock 710 MHz

DirectX 11

OpenGL 4.5

Max TDP 32 W

First benchmarked 2013-01-25

Samples 323

PassMark listing (collected 2026-10-01)

PassMark's own listing for the NVIDIA GeForce GT 645M states the PCIe 3.0 x16 interface, up to 2 GB of memory, a core clock of 710 MHz, DirectX 11 and OpenGL 4.5, first benchmarked on 2013-01-25. These are PassMark's figures, shown separately from the specification tables above.

Graphics processor

Architecture Kepler

Codename GK107 (N13P-GS)

Chip Not recorded

Process node Not recorded

Transistors Not recorded

Die size Not recorded

The NVIDIA GeForce GT 645M is based on the Kepler architecture and uses the GK107 (N13P-GS) graphics processor.

Clock speeds

Base clock 710 MHz

Boost clock Not recorded

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The NVIDIA GeForce GT 645M runs at a base clock of 710 MHz.

Memory

Size 2 GB

Type Not recorded

Bus width 128-bit

Bandwidth Not recorded

The NVIDIA GeForce GT 645M is equipped with 2 GB of memory and uses a 128-bit memory bus.

Board and power

The NVIDIA GeForce GT 645M has a board power rating of 32 W and it connects over PCIe 3.0 x16.

Board power (TDP) 32 W

Total board power Not recorded

Suggested PSU Not recorded

Power connectors Not recorded

Slot width Not recorded

Length Not recorded

Width Not recorded

Height Not recorded

Cooler Not recorded

Max temperature Not recorded

Bus interface PCIe 3.0 x16

Market

Launched October 1, 2012

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Desktop

Series GeForce GT

The NVIDIA GeForce GT 645M was released on October 1, 2012.

Benchmarks

PassMark G3D 941

PassMark G2D 167

Rank #1,425

Samples 323

Graphics and compute APIs

The NVIDIA GeForce GT 645M supports DirectX 12, OpenGL 4.5 and Vulkan 1.2.

DirectX 12

OpenGL 4.5

Vulkan 1.2

Feex has no recorded CUDA compute capability for the NVIDIA GeForce GT 645M. Feex has no recorded OpenCL version for the NVIDIA GeForce GT 645M.

Naming and aliases

The NVIDIA GeForce GT 645M is also known by other names: PassMark also lists it as NVIDIA GeForce GT 645M (Mobile).

Other names (PassMark) NVIDIA GeForce GT 645M (Mobile)

Frequently asked questions

How much VRAM does the NVIDIA GeForce GT 645M have?

The NVIDIA GeForce GT 645M has 2 GB of video memory on a 128-bit bus.

How much power does the NVIDIA GeForce GT 645M use and what power supply does it need?

The NVIDIA GeForce GT 645M has a board power rating of 32 W.

How fast is the NVIDIA GeForce GT 645M?

The NVIDIA GeForce GT 645M scores 941 in the PassMark G3D benchmark, higher than 53.1% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,425. In the PassMark DirectX 12 test it averages 6 fps.

What bus interface does the NVIDIA GeForce GT 645M use?

The NVIDIA GeForce GT 645M connects over PCIe 3.0 x16.

When was the NVIDIA GeForce GT 645M released?

The NVIDIA GeForce GT 645M was released on October 1, 2012.

Corrections to this record

After an audit, 1 empty field was filled from sources. Each change is listed with its old value, new value, rule and sources.

1 filled value

Architecture: Kepler (was Not recorded). Rule: Architecture from chip codename. chip GK107 -> Kepler. Sources: Wikipedia: List of Nvidia graphics processing units (revision 1377107724).

The audit log is public: all changes for this GPU, the corrections overview and the method.