Radeon HD 4870 vs Radeon HD 7470 OEM
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 1024MB VRAM Radeon HD 7470 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 4870 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 28.80GB/s)
640 additional rendering cores
Radeon HD 7470 OEM 's Advantages
Released 3 years and 7 months late
More VRAM (1024GB vs 512GB)
Lower TDP (27W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 4870
+400%
1200
Radeon HD 7470 OEM
240
Graphics Card
Jun 2008
Release Date
Jan 2012
Radeon R700
Generation
Southern Islands
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
GDDR5
256bit
Memory Bus
64bit
115.2GB/s
Bandwidth
28.80GB/s
Render Config
10
Compute Units
2
800
Shading Units
160
40
TMUs
8
16
ROPs
4
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
128 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
3.000 GPixel/s
30.00 GTexel/s
Texture Rate
6.000 GTexel/s
1200 GFLOPS
FP32 (float)
240.0 GFLOPS
240.0 GFLOPS
FP64 (double)
-
Board Design
150W
TDP
27W
450 W
Suggested PSU
200 W
2x DVI
1x S-Video
Outputs
1x DVI
1x DisplayPort 1.1
2x 6-pin
Power Connectors
None
Graphics Processor
RV770
GPU Name
Caicos
RV770 XT
(215-0669049)
GPU Variant
Khalidster
TeraScale
Architecture
TeraScale 2
TSMC
Foundry
TSMC
55 nm
Process Size
40 nm
0.956 billion
Transistors
0.37 billion
256 mm²
Die Size
67 mm²
Graphics Features
10.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
4.1
Shader Model
5.0
