Radeon HD 4870 vs Radeon HD 4580
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 512MB VRAM Radeon HD 4580 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 22.18GB/s)
680 additional rendering cores
Radeon HD 4580 's Advantages
Released 3 years and 5 months late
Lower TDP (65W vs 150W)
Score
Benchmark
FP32 (float)
Radeon HD 4870
+528%
1200
Radeon HD 4580
191
Graphics Card
Jun 2008
Release Date
Nov 2011
Radeon R700
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
900 MHz
Memory Clock
693 MHz
Memory
512MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
128bit
115.2GB/s
Bandwidth
22.18GB/s
Render Config
10
Compute Units
3
800
Shading Units
120
40
TMUs
8
16
ROPs
4
16 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
128 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
3.184 GPixel/s
30.00 GTexel/s
Texture Rate
6.368 GTexel/s
1200 GFLOPS
FP32 (float)
191.0 GFLOPS
240.0 GFLOPS
FP64 (double)
-
Board Design
150W
TDP
65W
450 W
Suggested PSU
250 W
2x DVI
1x S-Video
Outputs
2x DVI
1x S-Video
2x 6-pin
Power Connectors
None
Graphics Processor
RV770
GPU Name
RV635
RV770 XT
(215-0669049)
GPU Variant
RV635 PRO
(215-0682008)
TeraScale
Architecture
TeraScale
TSMC
Foundry
TSMC
55 nm
Process Size
55 nm
0.956 billion
Transistors
0.378 billion
256 mm²
Die Size
135 mm²
Graphics Features
10.1 (10_1)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3
1.1
OpenCL
N/A
N/A
Vulkan
N/A
4.1
Shader Model
4.1
