Radeon HD 4890 vs Radeon HD 4850 X2

Radeon HD 4890
Radeon HD 4850 X2
800 Shaders
2GB GDDR5
850MHz
2x 800 Shaders
2x 1GB GDDR3
625MHz
FP32
1.36 TFLOPS
FP32
2 TFLOPS
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Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
190W
TDP
250W
Power Connectors
2x 6-Pin
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Power Connectors
1x 6-Pin
1x 8-Pin
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GB5 OpenCL - N/A
0%
GB5 OpenCL - N/A
0%
GB5 CUDA - N/A
0%
GB5 CUDA - N/A
0%
GB5 Metal - N/A
0%
GB5 Metal - N/A
0%
GB5 Vulkan - N/A
0%
GB5 Vulkan - N/A
0%
OCT 2020.1 - N/A
0%
OCT 2020.1 - N/A
0%
OCT Metal - N/A
0%
OCT Metal - N/A
0%
Manufacturer
ATI
Manufacturer
ATI
Chip Designer
ATI
Chip Designer
ATI
Architecture
TeraScale 1
Architecture
TeraScale 1
Family
Radeon HD 4000
Family
Radeon HD 4000
Codename
Spartan
RV790
Variant
RV790 XT
Codename
Wekiva
RV770
Variant
RV770 Pro
Market Segment
Desktop
Market Segment
Desktop
Release Date
4/2/2009
Release Date
11/7/2008
Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
55nm
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Fabrication Node
55nm
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Die Size
282 mm²
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Die Size
2x 256 mm²
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Transistor Count
959 Million
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Transistor Count
2x 956 Million
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Transistor Density
3.40M/mm²
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Transistor Density
3.73M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
800 Shaders
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Shading Units
2x 800 Shaders
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Texture Mapping Units
40 TMUs
Texture Mapping Units
2x 40 TMUs
Render Output Units
16 ROPs
Render Output Units
2x 16 ROPs
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Compute Units
10 CUs
Compute Units
2x 10 CUs
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850MHz
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625MHz
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FP32
1.36 TFLOPS
FP32
2 TFLOPS
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FP64
0.27 TFLOPS
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FP64
0.4 TFLOPS
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Pixel Fillrate
13.6 GPixel/s
Pixel Fillrate
10 GPixel/s
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Texture Fillrate
34 GTexel/s
Texture Fillrate
25 GTexel/s
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L1
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16KB/CU
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L1
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16KB/CU
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L2
256KB Shared
L2
256KB Shared
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2GB
GDDR5
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2x 1GB
GDDR3
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Bus Width
256Bit
Bus Width
256Bit
Clock
975MHz
Transfer Rate
3.9GT/s
Bandwidth
124.8GB/s
Clock
995MHz
Transfer Rate
2GT/s
Bandwidth
63.7GB/s
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TDP
190W
TDP
250W
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1x S-Video
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2x DVI-I Dual-Link
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1x S-Video
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4x DVI-I Dual-Link
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Max Resolution
2560x1600
Max Resolution
2560x1600
Max Resolution Refresh Rate
60Hz
Max Resolution Refresh Rate
60Hz
Variable Refresh Rate
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Variable Refresh Rate
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Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
2
Multi Monitor Support
4
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No Encoders
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No Encoders
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Model
UVD 2.0
Model
UVD 2.0
Codec
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VC-1
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AVC (H.264)
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Codec
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VC-1
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AVC (H.264)
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Direct X
10
Direct 3D
10_1
Direct X
10
Direct 3D
10_1
OpenGL
3.3
OpenCL
1.1
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OpenGL
3.3
OpenCL
1.1
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Shader Model
4.1
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GFX
3
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Shader Model
4.1
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GFX
3
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1x Fan
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1x Fan
Power Connectors
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2x 6-Pin
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Power Connectors
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1x 6-Pin
1x 8-Pin
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Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
Multi GPU Support
Supported
Type
4-way CrossFireX
Multi GPU Support
Supported
Type
2-way CrossFireX
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Change Results