ATI Radeon HD 5770 Mac vs ATI Radeon HD 4870
ATI Radeon HD 5770 Mac
$159
ATI Radeon HD 4870
$299
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800 Shaders
1GB GDDR5
850MHz
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800 Shaders
1GB GDDR5
750MHz
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Peak AI Performance
1.36 TFLOPS
FP32
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Peak AI Performance
1.2 TFLOPS
FP32
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FP32
1.36 TFLOPS
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FP32
1.2 TFLOPS
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Form Factor
PCIe Card
2.0-Slots
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Form Factor
PCIe Card
2.0-Slots
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TDP
108W
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TDP
150W
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Power Connectors
1x 6-Pin
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Power Connectors
2x 6-Pin
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Peak AI Performance
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Radeon HD 5770 Mac - 1.36 TFLOPS FP32
x1.13
Radeon HD 4870 - 1.2 TFLOPS FP32
x1
FP32
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Radeon HD 5770 Mac - 1.36 TFLOPS FP32
x1.13
Radeon HD 4870 - 1.2 TFLOPS FP32
x1
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Radeon HD 5770 Mac - 76.8GB/s
x1
Radeon HD 4870 - 115.2GB/s
x1.5
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Radeon HD 5770 Mac - 108W
x1
Radeon HD 4870 - 150W
x1.39
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Manufacturer
ATI
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Manufacturer
ATI
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Chip Designer
ATI
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Chip Designer
ATI
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Architecture
TeraScale 2
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Architecture
TeraScale 1
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Family
Radeon HD 5000
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Family
Radeon HD 4000
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Codename
Juniper
RV840
Variant
Juniper XT
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Codename
Wekiva
RV770
Variant
RV770 XT
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Market Segment
Desktop
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Market Segment
Desktop
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Release Date
10/13/2009
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Release Date
6/25/2008
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Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
40nm
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Fabrication Node
55nm
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Die Size
170 mm²
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Die Size
256 mm²
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Transistor Count
1 Billion
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Transistor Count
956 Million
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Transistor Density
6.12M/mm²
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Transistor Density
3.73M/mm²
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Form
PCIe Card
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Form
PCIe Card
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Shading Units
800 Shaders
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Shading Units
800 Shaders
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Texture Mapping Units
40 TMUs
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Texture Mapping Units
40 TMUs
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Render Output Units
16 ROPs
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Render Output Units
16 ROPs
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Compute Units
10 CUs
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Compute Units
10 CUs
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850MHz
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750MHz
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Peak AI Performance
1.36 TFLOPS
FP32
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Peak AI Performance
1.2 TFLOPS
FP32
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FP32
1.36 TFLOPS
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FP32
1.2 TFLOPS
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-
-
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FP64
240 GFLOPS
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Pixel Fillrate
13.6 GPixel/s
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Pixel Fillrate
12 GPixel/s
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Texture Fillrate
34 GTexel/s
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Texture Fillrate
30 GTexel/s
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L1
8KB/CU
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L1
16KB/CU
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L2
256KB Shared
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L2
256KB Shared
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1GB
GDDR5
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1GB
GDDR5
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Bus Width
128Bit
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Bus Width
256Bit
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Clock
1200MHz
Transfer Rate
4.8GT/s
Bandwidth
76.8GB/s
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Clock
900MHz
Transfer Rate
3.6GT/s
Bandwidth
115.2GB/s
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TDP
108W
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TDP
150W
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1x DVI-I Dual-Link
2x mini-DisplayPort 1.1
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1x S-Video
2x DVI-I Dual-Link
-
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Max Resolution
2560x1600
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Max Resolution
2560x1600
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Max Resolution Refresh Rate
60Hz
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Max Resolution Refresh Rate
60Hz
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Variable Refresh Rate
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Variable Refresh Rate
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Display Stream Compression (DSC)
Not Supported
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Display Stream Compression (DSC)
Not Supported
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Multi Monitor Support
2
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Multi Monitor Support
2
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No Encoders
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No Encoders
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Model
UVD 2.2
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Model
UVD 2.0
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Codec
VC-1
AVC (H.264)
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Codec
VC-1
AVC (H.264)
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Direct X
11
Direct 3D
11_0
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Direct X
10
Direct 3D
10_1
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OpenGL
4.5
OpenCL
1.2
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OpenGL
3.3
OpenCL
1.1
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Shader Model
5.0
GFX
4
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Shader Model
4.1
GFX
3
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1x Fan
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1x Fan
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Power Connectors
1x 6-Pin
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Power Connectors
2x 6-Pin
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Slots Required
2.0
PCIe Version
2.1
PCIe Lanes
16
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Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
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Multi GPU Support
Supported
Type
4-way CrossFireX
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Multi GPU Support
Supported
Type
4-way CrossFireX
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Height
111 mm (4.37 in)
Width
208 mm (8.19 in)
Depth
37 mm (1.46 in)
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