AMD Radeon HD 7870 GHz vs AMD Radeon R9 270X
AMD Radeon HD 7870 GHz
$350
AMD Radeon R9 270X
$199
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1280 Shaders
2GB GDDR5
1000MHz
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1280 Shaders
2GB GDDR5
1050MHz
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Peak AI Performance
2.56 TFLOPS
FP32
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Peak AI Performance
2.69 TFLOPS
FP32
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FP32
2.56 TFLOPS
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FP32
2.69 TFLOPS
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-
-
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-
-
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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
175W
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TDP
180W
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Power Connectors
2x 6-Pin
-
-
-
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Power Connectors
2x 6-Pin
-
-
-
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GB6 OpenCL N/A
0%
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GB6 OpenCL N/A
0%
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GB6 Metal N/A
0%
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GB6 Metal N/A
0%
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GB6 Vulkan N/A
0%
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GB6 Vulkan N/A
0%
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GB5 OpenCL N/A
0%
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GB5 OpenCL N/A
0%
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GB5 CUDA N/A
0%
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GB5 CUDA N/A
0%
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GB5 Metal N/A
0%
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GB5 Metal N/A
0%
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GB5 Vulkan N/A
0%
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GB5 Vulkan N/A
0%
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OCT 2020.1 N/A
0%
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OCT 2020.1 N/A
0%
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OCT Metal N/A
0%
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OCT Metal N/A
0%
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Peak AI
Performance
2.56 TFLOPS
FP32
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Peak AI
Performance
2.69 TFLOPS
FP32
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FP32
2.56 TFLOPS
-
-
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FP32
2.69 TFLOPS
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-
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FP64
160 GFLOPS
-
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FP64
170 GFLOPS
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Pixel
Fillrate
32 GPixel/s
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Pixel
Fillrate
33.6 GPixel/s
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Texture
Fillrate
80 GTexel/s
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Texture
Fillrate
84 GTexel/s
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Manufacturer
AMD
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Manufacturer
AMD
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Chip Designer
AMD
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Chip Designer
AMD
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Architecture
GCN 1
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Architecture
GCN 1
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Family
Radeon HD 7000
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Family
Radeon R 200
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Codename
Pitcairn
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Variant
Pitcairn XT
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Codename
Pitcairn
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Variant
Curacao XT
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Market Segment
Desktop
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Market Segment
Desktop
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Release Date
3/5/2012
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Release Date
8/8/2013
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Foundry
TSMC
-
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Foundry
TSMC
-
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Fabrication Node
28nm
-
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Fabrication Node
28nm
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Die Size
212 mm²
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Die Size
212 mm²
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Transistor Count
2.8 Billion
-
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Transistor Count
2.8 Billion
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Transistor Density
13.21M/mm²
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Transistor Density
13.21M/mm²
-
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Form
PCIe Card
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Form
PCIe Card
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Shading Units
1280 Shaders
-
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Shading Units
1280 Shaders
-
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Texture Mapping Units
80 TMUs
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Texture Mapping Units
80 TMUs
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Render Output Units
32 ROPs
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Render Output Units
32 ROPs
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Compute Units
20 CUs
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Compute Units
20 CUs
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-
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-
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-
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1000MHz
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1000MHz Base
1050MHz
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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
512KB Shared
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L2
512KB Shared
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2GB
GDDR5
-
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2GB
GDDR5
-
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Bus Width
256Bit
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Bus Width
256Bit
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Clock
1200MHz
Transfer Rate
4.8GT/s
Bandwidth
153.6GB/s
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Clock
1400MHz
Transfer Rate
5.6GT/s
Bandwidth
179.2GB/s
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TDP
175W
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TDP
180W
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1x DVI-I Dual-Link
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2x mini-DisplayPort 1.2
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1x HDMI 1.4
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1x DVI-I Dual-Link
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1x DVI-D Dual-Link
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1x DisplayPort 1.2
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1x HDMI 1.4
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Max Resolution
4096x2160
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Max Resolution
4096x2160
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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
3
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Multi Monitor Support
3
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-
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Model
VCE 1.0
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Model
VCE 1.0
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Codec
-
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AVC (H.264)
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Codec
-
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AVC (H.264)
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Model
UVD 4.0
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Model
UVD 3.2
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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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-
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Direct X
12
Direct 3D
11_1
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Direct X
12
Direct 3D
11_1
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OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
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OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
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Shader Model
6.5
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GFX
6
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Shader Model
6.5
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GFX
6
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1x Fan
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1x Fan
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Power Connectors
-
-
2x 6-Pin
-
-
-
-
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Power Connectors
-
-
2x 6-Pin
-
-
-
-
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
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Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
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Multi GPU Support
Supported
Type
2-way CrossFireX
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Multi GPU Support
Supported
Type
2-way CrossFireX
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Height
111 mm (4.37 in)
Width
241 mm (9.49 in)
Depth
37 mm (1.46 in)
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