ATI Radeon HD 4580 vs AMD Radeon HD 6450
ATI Radeon HD 4580
AMD Radeon HD 6450
$55
|
120 Shaders
512MB GDDR3
796MHz
|
160 Shaders
1GB DDR3
750MHz
|
|
Peak AI Performance
190 GFLOPS
FP32
|
Peak AI Performance
240 GFLOPS
FP32
|
|
FP32
190 GFLOPS
|
FP32
240 GFLOPS
|
|
Form Factor
PCIe Card
1.0-Slots
|
Form Factor
PCIe Card
1.0-Slots
|
|
TDP
65W
|
TDP
27W
|
Peak AI Performance
|
|
Radeon HD 4580 - 190 GFLOPS FP32
x1
Radeon HD 6450 - 240 GFLOPS FP32
x1.26
FP32
|
|
Radeon HD 4580 - 190 GFLOPS FP32
x1
Radeon HD 6450 - 240 GFLOPS FP32
x1.26
|
|
Radeon HD 4580 - 22.2GB/s
x1.73
Radeon HD 6450 - 12.8GB/s
x1
|
|
Radeon HD 4580 - 65W
x2.41
Radeon HD 6450 - 27W
x1
|
Manufacturer
ATI
|
Manufacturer
AMD
|
|
Chip Designer
ATI
|
Chip Designer
AMD
|
|
Architecture
TeraScale 1
|
Architecture
TeraScale 2
|
|
Family
Radeon HD 4000
|
Family
Radeon HD 6000
|
|
Codename
Wario
RV635
Variant
RV635 Pro
|
Codename
Caicos
RV910
Variant
Caicos
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
11/20/2011
|
Release Date
4/7/2011
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
55nm
|
Fabrication Node
40nm
|
|
Die Size
135 mm²
|
Die Size
67 mm²
|
|
Transistor Count
378 Million
|
Transistor Count
370 Million
|
|
Transistor Density
2.80M/mm²
|
Transistor Density
5.52M/mm²
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
120 Shaders
|
Shading Units
160 Shaders
|
|
Texture Mapping Units
8 TMUs
|
Texture Mapping Units
8 TMUs
|
|
Render Output Units
4 ROPs
|
Render Output Units
4 ROPs
|
|
Compute Units
3 CUs
|
Compute Units
2 CUs
|
|
-
796MHz
|
625MHz Base
750MHz
|
|
Peak AI Performance
190 GFLOPS
FP32
|
Peak AI Performance
240 GFLOPS
FP32
|
|
FP32
190 GFLOPS
|
FP32
240 GFLOPS
|
|
Pixel Fillrate
3.184 GPixel/s
|
Pixel Fillrate
3 GPixel/s
|
|
Texture Fillrate
6.368 GTexel/s
|
Texture Fillrate
6 GTexel/s
|
|
L1
-
Unknown
|
L1
8KB/CU
-
|
|
L2
128KB Shared
|
L2
128KB Shared
|
|
512MB
GDDR3
|
1GB
DDR3
|
|
Bus Width
128Bit
|
Bus Width
64Bit
|
|
Clock
693MHz
Transfer Rate
1.4GT/s
Bandwidth
22.2GB/s
|
Clock
800MHz
Transfer Rate
1.6GT/s
Bandwidth
12.8GB/s
|
|
TDP
65W
|
TDP
27W
|
|
-
1x S-Video
2x DVI-I Dual-Link
-
|
1x VGA
-
1x DVI-I Dual-Link
1x HDMI 1.3
|
|
Max Resolution
2560x1600
|
Max Resolution
2560x1600
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
|
Variable Refresh Rate
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
2
|
Multi Monitor Support
2
|
|
No Encoders
|
No Encoders
|
|
Model
UVD 1.0
|
Model
UVD 3.0
|
|
Codec
-
-
-
VC-1
AVC (H.264)
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
|
Direct X
10
Direct 3D
10_1
|
Direct X
11
Direct 3D
11_0
|
|
OpenGL
3.3
OpenCL
1.1
|
OpenGL
4.5
OpenCL
1.2
|
|
Shader Model
4.1
GFX
3
|
Shader Model
5.0
GFX
4
|
|
1x Fan
|
1x Fan
|
|
Slots Required
1.0
PCIe Version
2.0
PCIe Lanes
16
|
Slots Required
1.0
PCIe Version
2.1
PCIe Lanes
16
|
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