NVIDIA · GeForce GT 400 Series

NVIDIA GeForce GT 420

The NVIDIA GeForce GT 420 is a graphics card released on September 3, 2010, built on the Fermi architecture. It has 48 shading units, 1 GB of DDR3 memory, a boost clock of 700 MHz and a 50 W board power rating. It scores 436 in the PassMark G3D benchmark. It supports DirectX 11 and OpenGL 4.1.

FermiGF108-200-A1

7/10 key specs recorded · 26 facts

Depth: 37 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 PassMark Videocard Benchmark Wikipedia GPU list tables (wikigrid-2026-09)

Shading units

48cores

Memory

1 GB

DDR3

Boost clock

n/a

700 MHz base

Board power

50 W

Performance

The NVIDIA GeForce GT 420 scores 436 in the PassMark G3D benchmark, higher than 33.7% of the 2,658 GPUs benchmarked (PassMark rank #1,957), measured across 551 submitted results. Its PassMark G2D score is 198.

PassMark G3D Mark

436

Rank #1,957
Faster than 33.7% of 2,658 GPUs
551 samples

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

PassMark workload tests

DirectX 9 10 fps

reference: fastest recorded 526 fps · faster than 19.5% of 1,675 GPUs

DirectX 10 3 fps

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

DirectX 11 4 fps

reference: fastest recorded 362 fps · faster than 7.8% of 1,430 GPUs

DirectX 12 1 fps

reference: fastest recorded 213 fps · faster than 0% of 1,274 GPUs

GPU Compute 170 ops/s

reference: fastest recorded 26,591 ops/s · faster than 6.4% 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 420 averages DirectX 9 10 fps, DirectX 10 3 fps, DirectX 11 4 fps, DirectX 12 1 fps and GPU Compute 170 ops/s, across 551 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

As stated by PassMark

Category Desktop

Bus interface PCIe 2.0 x16

Max memory 1 GB

Core clock 700 MHz

Memory clock 900 MHz

DirectX 11

OpenGL 4.1

Max TDP 50 W

First benchmarked 2010-12-10

Samples 551

PassMark listing (collected 2026-10-01)

PassMark's own listing for the NVIDIA GeForce GT 420 states the PCIe 2.0 x16 interface, up to 1 GB of memory, a core clock of 700 MHz, DirectX 11 and OpenGL 4.1, first benchmarked on 2010-12-10. These are PassMark's figures, shown separately from the specification tables above.

Not to be confused with

This page covers the NVIDIA GeForce GT 420 specifically. It is a different product from NVIDIA GeForce GT 420M, which have their own specifications. Check the exact model name before comparing figures.

Graphics processor

Architecture Fermi

Codename GF108-200-A1

Chip Not recorded

Process node Not recorded

Transistors 585 M

Die size 116 mm²

The NVIDIA GeForce GT 420 is based on the Fermi architecture, uses the GF108-200-A1 graphics processor, contains 585 million transistors and has a die size of 116 mm².

Shader configuration

Shading units 48

Compute units Not recorded

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 4

Render output units (ROPs) 4

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The NVIDIA GeForce GT 420 has 48 shading units, 4 texture mapping units and 4 render output units.

The NVIDIA GeForce GT 420 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 420. Feex has no recorded ray tracing core count for the NVIDIA GeForce GT 420.

Clock speeds

Base clock 700 MHz

Boost clock Not recorded

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The NVIDIA GeForce GT 420 runs at a base clock of 700 MHz.

Memory

Size 1 GB

Type DDR3

Bus width Not recorded

Bandwidth Not recorded

The NVIDIA GeForce GT 420 is equipped with 1 GB of DDR3 memory.

Board and power

The NVIDIA GeForce GT 420 has a board power rating of 50 W and it connects over PCIe 2.0 x16.

Board power (TDP) 50 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 2.0 x16

Market

Launched September 3, 2010

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Desktop

Series GeForce GT 400 Series

The NVIDIA GeForce GT 420 was released on September 3, 2010.

Benchmarks

PassMark G3D 436

PassMark G2D 198

Rank #1,957

Samples 551

Graphics and compute APIs

The NVIDIA GeForce GT 420 supports DirectX 11 and OpenGL 4.1.

DirectX 11

OpenGL 4.1

Feex has no recorded CUDA compute capability for the NVIDIA GeForce GT 420. Feex has no recorded Vulkan version for the NVIDIA GeForce GT 420. Feex has no recorded OpenCL version for the NVIDIA GeForce GT 420.

Frequently asked questions

How much VRAM does the NVIDIA GeForce GT 420 have?

The NVIDIA GeForce GT 420 has 1 GB of DDR3 memory.

How much power does the NVIDIA GeForce GT 420 use and what power supply does it need?

The NVIDIA GeForce GT 420 has a board power rating of 50 W.

How fast is the NVIDIA GeForce GT 420?

The NVIDIA GeForce GT 420 scores 436 in the PassMark G3D benchmark, higher than 33.7% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,957. In the PassMark DirectX 12 test it averages 1 fps.