AMD Radeon R9 295X2 vs AMD Radeon R9 280X
AMD Radeon R9 295X2
$1,499
AMD Radeon R9 280X
$299
|
2x 2816 Shaders
8GB (2x 4GB) GDDR5
1018MHz
|
2048 Shaders
3GB GDDR5
1000MHz
|
|
Peak AI Performance
11.47 TFLOPS
FP32
|
Peak AI Performance
4.1 TFLOPS
FP32
|
|
FP32
11.47 TFLOPS
|
FP32
4.1 TFLOPS
|
|
Form Factor
PCIe Card
2.1-Slots
|
Form Factor
PCIe Card
2.0-Slots
|
|
TDP
500W
|
TDP
250W
|
|
Power Connectors
-
2x 8-Pin
|
Power Connectors
1x 6-Pin
1x 8-Pin
|
Peak AI Performance
|
|
Radeon R9 295X2 - 11.47 TFLOPS FP32
x2.8
Radeon R9 280X - 4.1 TFLOPS FP32
x1
FP32
|
|
Radeon R9 295X2 - 11.47 TFLOPS FP32
x2.8
Radeon R9 280X - 4.1 TFLOPS FP32
x1
|
|
Radeon R9 295X2 - 320GB/s
x1.11
Radeon R9 280X - 288GB/s
x1
|
|
Radeon R9 295X2 - 500W
x2
Radeon R9 280X - 250W
x1
|
Manufacturer
AMD
|
Manufacturer
AMD
|
|
Chip Designer
AMD
|
Chip Designer
AMD
|
|
Architecture
GCN 2
|
Architecture
GCN 1
|
|
Family
Radeon R 200
|
Family
Radeon R 200
|
|
Codename
Hawaii
Variant
Vesuvius XT
|
Codename
Tahiti
Variant
Tahiti XTL
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
4/8/2014
|
Release Date
8/8/2013
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
28nm
|
Fabrication Node
28nm
|
|
Die Size
2x 438 mm²
|
Die Size
352 mm²
|
|
Transistor Count
2x 6.2 Billion
|
Transistor Count
4.3 Billion
|
|
Transistor Density
14.16M/mm²
|
Transistor Density
12.25M/mm²
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
2x 2816 Shaders
|
Shading Units
2048 Shaders
|
|
Texture Mapping Units
2x 176 TMUs
|
Texture Mapping Units
128 TMUs
|
|
Render Output Units
2x 64 ROPs
|
Render Output Units
32 ROPs
|
|
Compute Units
2x 44 CUs
|
Compute Units
32 CUs
|
|
-
1018MHz
|
850MHz Base
1000MHz
|
|
Peak AI Performance
11.47 TFLOPS
FP32
|
Peak AI Performance
4.1 TFLOPS
FP32
|
|
FP32
11.47 TFLOPS
|
FP32
4.1 TFLOPS
|
|
FP64
1.43 TFLOPS
|
FP64
1.02 TFLOPS
|
|
Pixel Fillrate
65.152 GPixel/s
|
Pixel Fillrate
32 GPixel/s
|
|
Texture Fillrate
179.168 GTexel/s
|
Texture Fillrate
128 GTexel/s
|
|
L1
16KB/CU
|
L1
16KB/CU
|
|
L2
1MB Shared
|
L2
768KB Shared
|
|
8GB (2x 4GB)
GDDR5
|
3GB
GDDR5
|
|
Bus Width
512Bit
|
Bus Width
384Bit
|
|
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
320GB/s
|
Clock
1500MHz
Transfer Rate
6GT/s
Bandwidth
288GB/s
|
|
TDP
500W
|
TDP
250W
|
|
-
1x DVI-D Dual-Link
4x mini-DisplayPort 1.2
-
-
|
1x DVI-I Dual-Link
1x DVI-D Dual-Link
-
1x DisplayPort 1.2
1x HDMI 1.4
|
|
Max Resolution
4096x2160
|
Max Resolution
4096x2160
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
FreeSync
|
Variable Refresh Rate
-
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
4
|
Multi Monitor Support
3
|
|
Content Protection
HDCP 1.4
|
-
-
|
|
Model
VCE 2.0
|
Model
VCE 1.0
|
|
Codec
AVC (H.264)
|
Codec
AVC (H.264)
|
|
Model
UVD 4.2
|
Model
UVD 3.2
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
Codec
MPEG-1
MPEG-2
MPEG-4
VC-1
AVC (H.264)
|
|
Direct X
12
Direct 3D
12_0
|
Direct X
12
Direct 3D
11_1
|
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
6.5
GFX
7
|
Shader Model
6.5
GFX
6
|
|
1x Fan
|
1x Fan
|
|
Power Connectors
-
2x 8-Pin
|
Power Connectors
1x 6-Pin
1x 8-Pin
|
|
Slots Required
2.1
PCIe Version
3.0
PCIe Lanes
16
|
Slots Required
2.0
PCIe Version
3.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
CrossFire XDMA
|
Multi GPU Support
Supported
Type
4-way CrossFireX
|
|
Height
115 mm (4.53 in)
Width
307 mm (12.09 in)
Depth
42 mm (1.65 in)
|
Height
110 mm (4.33 in)
Width
275 mm (10.83 in)
Depth
36 mm (1.42 in)
|
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