NVIDIA · GeForce GT 600 Series

NVIDIA GeForce GT 645

The NVIDIA GeForce GT 645 is a graphics card released on April 24, 2012 using a 40 nm process. It has 288 shading units, 91.9 GB/s of memory bandwidth, a boost clock of 776 MHz and a 102 W board power rating. It scores 2,006 in the PassMark G3D benchmark.

GF114-400-A140 nm

7/10 key specs recorded · 20 facts

Depth: 25 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: 7 of 10 tracked specifications recorded.

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

Shading units

288cores

Memory

n/a

GDDR5 · 192-bit

Boost clock

n/a

776 MHz base

Board power

102 W

Performance

The NVIDIA GeForce GT 645 scores 2,006 in the PassMark G3D benchmark, higher than 66.4% of the 2,658 GPUs benchmarked (PassMark rank #986), measured across 11 submitted results. Its PassMark G2D score is 443.

PassMark G3D Mark

2,006

Rank #986
Faster than 66.4% of 2,658 GPUs
11 samples

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

PassMark workload tests

DirectX 9 33 fps

reference: fastest recorded 526 fps · faster than 48.6% of 1,675 GPUs

DirectX 10 6 fps

reference: fastest recorded 231 fps · faster than 39% of 1,602 GPUs

DirectX 11 16 fps

reference: fastest recorded 362 fps · faster than 44.8% of 1,430 GPUs

DirectX 12 11 fps

reference: fastest recorded 213 fps · faster than 38.8% of 1,274 GPUs

GPU Compute 723 ops/s

reference: fastest recorded 26,591 ops/s · faster than 37.7% 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 645 averages DirectX 9 33 fps, DirectX 10 6 fps, DirectX 11 16 fps, DirectX 12 11 fps and GPU Compute 723 ops/s, across 11 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

As stated by PassMark

First benchmarked 2012-11-01

Samples 11

PassMark listing (collected 2026-10-01)

Not to be confused with

This page covers the NVIDIA GeForce GT 645 specifically. It is a different product from NVIDIA GeForce GT 645M, which have their own specifications. Check the exact model name before comparing figures.

Graphics processor

Architecture Not recorded

Codename GF114-400-A1

Chip Not recorded

Process node 40 nm

Transistors 1,950 M

Die size 332 mm²

The NVIDIA GeForce GT 645 uses the GF114-400-A1 graphics processor, is manufactured on a 40 nm process, contains 1,950 million transistors and has a die size of 332 mm².

Shader configuration

Shading units 288

Compute units Not recorded

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 48

Render output units (ROPs) 24

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The NVIDIA GeForce GT 645 has 288 shading units, 48 texture mapping units and 24 render output units.

The NVIDIA GeForce GT 645 does not use XMX engines; those are specific to Intel Arc graphics. Infinity Cache is an AMD architectural feature and does not apply to the NVIDIA GeForce GT 645. Feex has no recorded ray tracing core count for the NVIDIA GeForce GT 645.

Clock speeds

Base clock 776 MHz

Boost clock Not recorded

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The NVIDIA GeForce GT 645 runs at a base clock of 776 MHz.

Memory

Size Not recorded

Type GDDR5

Bus width 192-bit

Bandwidth 91.9 GB/s

The NVIDIA GeForce GT 645 uses a 192-bit memory bus and delivers 91.9 GB/s of memory bandwidth.

Board and power

The NVIDIA GeForce GT 645 has a board power rating of 102 W.

Board power (TDP) 102 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 Not recorded

Market

Launched April 24, 2012

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Desktop

Series GeForce GT 600 Series

The NVIDIA GeForce GT 645 was released on April 24, 2012.

Benchmarks

PassMark G3D 2,006

PassMark G2D 443

Rank #986

Samples 11

Frequently asked questions

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

The NVIDIA GeForce GT 645 has a board power rating of 102 W.

How fast is the NVIDIA GeForce GT 645?

The NVIDIA GeForce GT 645 scores 2,006 in the PassMark G3D benchmark, higher than 66.4% of the 2,658 GPUs benchmarked. Its PassMark rank is #986. In the PassMark DirectX 12 test it averages 11 fps.