Radeon RX 455 OEM vs Quadro NVS 420

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Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureTesla (2006−2010)GCN 2.0 (2013−2017)
GPU code nameG98Tobago
Market segmentWorkstationDesktop
Release date20 January 2009 (15 years ago)30 June 2016 (8 years ago)
Launch price (MSRP)$131.43 no data
Current price$102 (0.8x MSRP)no data

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores8768
Core clock speed550 MHz1050 MHz
Number of transistors210 million2,080 million
Manufacturing process technology65 nm28 nm
Power consumption (TDP)40 Watt100 Watt
Texture fill rate4.40050.40
Floating-point performance2x 22.4 gflops1,613 gflops

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 1.0 x16PCIe 3.0 x16
Lengthno data165 mm
Width1-slot1-slot
Supplementary power connectorsNone1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR3GDDR5
Maximum RAM amount256 MB2 GB
Memory bus width64 Bit128 Bit
Memory clock speed1400 MHz6500 MHz
Memory bandwidth11.2 GB/s104.0 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputs1x DVI, 1x HDMI, 1x DisplayPort
HDMIno data+

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX11.1 (10_0)12 (12_0)
Shader Model4.06.3
OpenGL3.34.6
OpenCL1.12.0
VulkanN/A1.2.131
CUDA1.1no data

Pros & cons summary


Recency 20 January 2009 30 June 2016
Maximum RAM amount 256 MB 2 GB
Chip lithography 65 nm 28 nm
Power consumption (TDP) 40 Watt 100 Watt

We couldn't decide between Quadro NVS 420 and Radeon RX 455 OEM. We've got no test results to judge.

Be aware that Quadro NVS 420 is a workstation graphics card while Radeon RX 455 OEM is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA Quadro NVS 420
Quadro NVS 420
AMD Radeon RX 455 OEM
Radeon RX 455 OEM

Comparisons with similar GPUs

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Community ratings

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Questions & comments

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