Home GPU Comparison AMD Radeon RX 455 OEM vs NVIDIA GeForce GT 420 OEM

AMD Radeon RX 455 OEM vs NVIDIA GeForce GT 420 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 1024MB VRAM GeForce GT 420 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages
Released 5 years and 9 months late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (104.0GB/s vs 28.80GB/s)
720 additional rendering cores
NVIDIA GeForce GT 420 OEM 's Advantages
Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)
Radeon RX 455 OEM +1103%
1.613 TFLOPS
GeForce GT 420 OEM
0.134 TFLOPS
VS

Graphics Card

Jun 2016
Release Date
Sep 2010
Arctic Islands
Generation
GeForce 400
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
1625 MHz
Memory Clock
900 MHz

Memory

2GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
128bit
104.0GB/s
Bandwidth
28.80GB/s

Render Config

12
Compute Units
-
-
SM Count
1
768
Shading Units
48
48
TMUs
4
16
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

16.80 GPixel/s
Pixel Rate
1.400 GPixel/s
50.40 GTexel/s
Texture Rate
2.800 GTexel/s
-
-
-
1.613 TFLOPS
FP32 (float)
134.4 GFLOPS
100.8 GFLOPS
FP64 (double)
11.20 GFLOPS

Board Design

100W
TDP
50W
300 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
1x 6-pin
Power Connectors
None

Graphics Processor

Tobago
GPU Name
GF108
Tobago PRO (215-0875010)
GPU Variant
GF108-200-A1
GCN 2.0
Architecture
Fermi
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.08 billion
Transistors
0.585 billion
160 mm²
Die Size
116 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
2.1
6.3
Shader Model
5.1

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