Home GPU Comparison ATI Radeon HD 4870 vs NVIDIA GeForce GT 420 OEM

ATI Radeon HD 4870 vs NVIDIA GeForce GT 420 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 1024MB VRAM GeForce GT 420 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 28.80GB/s)
752 additional rendering cores
NVIDIA GeForce GT 420 OEM 's Advantages
Released 2 years and 3 months late
More VRAM (1024GB vs 512GB)
Lower TDP (50W vs 150W)

Score

Benchmark

FP32 (float)
Radeon HD 4870 +795%
1.2 TFLOPS
GeForce GT 420 OEM
0.134 TFLOPS
VS

Graphics Card

Jun 2008
Release Date
Sep 2010
Radeon R700
Generation
GeForce 400
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

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

Memory

512MB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
115.2GB/s
Bandwidth
28.80GB/s

Render Config

10
Compute Units
-
-
SM Count
1
800
Shading Units
48
40
TMUs
4
16
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

12.00 GPixel/s
Pixel Rate
1.400 GPixel/s
30.00 GTexel/s
Texture Rate
2.800 GTexel/s
-
-
-
1200 GFLOPS
FP32 (float)
134.4 GFLOPS
240.0 GFLOPS
FP64 (double)
11.20 GFLOPS

Board Design

150W
TDP
50W
450 W
Suggested PSU
250 W
2x DVI 1x S-Video
Outputs
1x DVI 1x HDMI 1.3a 1x VGA
2x 6-pin
Power Connectors
None

Graphics Processor

RV770
GPU Name
GF108
RV770 XT (215-0669049)
GPU Variant
GF108-200-A1
TeraScale
Architecture
Fermi
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.956 billion
Transistors
0.585 billion
256 mm²
Die Size
116 mm²

Graphics Features

10.1 (10_1)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
2.1
4.1
Shader Model
5.1

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