Home GPU Comparison AMD Radeon Sky 900 vs ATI Radeon HD 4580

AMD Radeon Sky 900 vs ATI Radeon HD 4580

We compared two Desktop platform GPUs: 3GB VRAM Radeon Sky 900 and 512MB VRAM Radeon HD 4580 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 900 's Advantages
Released 1 years and 4 months late
Boost Clock950MHz
More VRAM (3GB vs 512GB)
Larger VRAM bandwidth (240.0GB/s vs 22.18GB/s)
1672 additional rendering cores
ATI Radeon HD 4580 's Advantages
Lower TDP (65W vs 300W)

Score

Benchmark

FP32 (float)
Radeon Sky 900 +1682%
3.405 TFLOPS
Radeon HD 4580
0.191 TFLOPS
VS

Graphics Card

Mar 2013
Release Date
Nov 2011
Radeon Sky
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

825 MHz
Base Clock
-
950 MHz
Boost Clock
-
1250 MHz
Memory Clock
693 MHz

Memory

3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
128bit
240.0GB/s
Bandwidth
22.18GB/s

Render Config

28
Compute Units
3
-
-
-
1792
Shading Units
120
112
TMUs
8
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

30.40 GPixel/s
Pixel Rate
3.184 GPixel/s
106.4 GTexel/s
Texture Rate
6.368 GTexel/s
-
-
-
3.405 TFLOPS
FP32 (float)
191.0 GFLOPS
851.2 GFLOPS
FP64 (double)
-

Board Design

300W
TDP
65W
700 W
Suggested PSU
250 W
1x DVI 1x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
2x 8-pin
Power Connectors
None

Graphics Processor

Tahiti
GPU Name
RV635
Orthrus
GPU Variant
RV635 PRO (215-0682008)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.378 billion
352 mm²
Die Size
135 mm²

Graphics Features

12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1

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