Radeon HD 3870 X2 vs GeForce GTX 275
Radeon HD 3870 X2
GeForce GTX 275
|
2x 320 Shaders
2x 512MB GDDR4
825MHz
|
240 Shaders
896MB GDDR3
633MHz
|
|
FP32
1.06 TFLOPS
|
FP32
0.67 TFLOPS
|
|
-
-
|
-
-
|
|
Form Factor
PCIe Card
2.0-Slots
|
Form Factor
PCIe Card
2.0-Slots
|
|
TDP
165W
|
TDP
219W
|
|
Power Connectors
1x 6-Pin
1x 8-Pin
-
-
|
Power Connectors
2x 6-Pin
-
-
-
|
|
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
NVIDIA
|
|
Chip Designer
ATI
|
Chip Designer
NVIDIA
|
|
Architecture
TeraScale 1
|
Architecture
Tesla 2
|
|
Family
Radeon HD 3000
|
Family
GeForce 200
|
|
Codename
Boom
R680
Variant
R680 XT
|
Codename
NVA0
GT200B
Variant
GT200-105-B3
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
1/28/2008
|
Release Date
4/9/2009
|
|
Foundry
TSMC
-
|
Foundry
TSMC
-
|
|
Fabrication Node
55nm
-
|
Fabrication Node
55nm
-
|
|
Die Size
2x 192 mm²
-
|
Die Size
470 mm²
-
|
|
Transistor Count
2x 666 Million
-
|
Transistor Count
1.4 Billion
-
|
|
Transistor Density
3.47M/mm²
-
|
Transistor Density
2.98M/mm²
-
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
2x 320 Shaders
-
|
Shading Units
240 Shaders
-
|
|
Texture Mapping Units
2x 16 TMUs
|
Texture Mapping Units
80 TMUs
|
|
Render Output Units
2x 16 ROPs
|
Render Output Units
28 ROPs
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
|
Streaming Multiprocessors
30 SMs
|
|
Compute Units
2x 4 CUs
|
-
-
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
-
825MHz
|
-
1404MHz Shader
-
633MHz
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
FP32
1.06 TFLOPS
|
FP32
0.67 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
0.21 TFLOPS
-
|
FP64
0.08 TFLOPS
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
Pixel Fillrate
13.2 GPixel/s
|
Pixel Fillrate
17.724 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
13.2 GTexel/s
|
Texture Fillrate
50.64 GTexel/s
|
|
-
-
|
-
-
|
|
L1
-
-
-
Unknown
|
L1
-
-
-
Unknown
|
|
L2
256KB Shared
|
L2
256KB Shared
|
|
-
-
-
|
-
-
-
|
|
2x 512MB
GDDR4
-
|
896MB
GDDR3
-
|
|
Bus Width
256Bit
|
Bus Width
448Bit
|
|
Clock
1125MHz
Transfer Rate
2.3GT/s
Bandwidth
72GB/s
|
Clock
1134MHz
Transfer Rate
2.3GT/s
Bandwidth
127GB/s
|
|
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
|
|
TDP
165W
|
TDP
219W
|
|
-
-
|
-
-
|
|
-
1x S-Video
-
-
-
-
-
-
2x DVI-I Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
2x DVI-I Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
|
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
|
No Decoders
|
|
Codec
-
-
-
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
|
Direct X
10
Direct 3D
10_1
|
Direct X
11
Direct 3D
10_0
|
|
OpenGL
3.3
OpenCL
1.1
-
-
|
OpenGL
3.3
OpenCL
1.1
-
-
|
|
Shader Model
4.1
-
-
GFX
3
-
-
-
-
|
Shader Model
4.0
CUDA
1.3
-
-
PureVideo HD
VP2
VDPAU
Feature Set A
|
|
-
-
-
1x Fan
|
-
-
-
1x Fan
|
|
Power Connectors
-
-
1x 6-Pin
1x 8-Pin
-
-
-
|
Power Connectors
-
-
2x 6-Pin
-
-
-
-
|
|
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
2-way CrossFireX
|
Multi GPU Support
Supported
Type
3-way SLI
|
|
-
-
-
-
-
-
|
Height
111 mm (4.37 in)
Width
267 mm (10.51 in)
Depth
38 mm (1.5 in)
|
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