Radeon R9 295X2 vs Radeon R9 280
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 3GB VRAM Radeon R9 280 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 295X2 's Advantages
More VRAM (4GB vs 3GB)
Larger VRAM bandwidth (320.0GB/s vs 240.0GB/s)
1024 additional rendering cores
Radeon R9 280 's Advantages
Boost Clock933MHz
Lower TDP (200W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+71%
5733
Radeon R9 280
3344
Graphics Card
Apr 2014
Release Date
Mar 2014
Volcanic Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
827 MHz
-
Boost Clock
933 MHz
1250 MHz
Memory Clock
1250 MHz
Memory
4GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
384bit
320.0GB/s
Bandwidth
240.0GB/s
Render Config
44
Compute Units
28
2816
Shading Units
1792
176
TMUs
112
64
ROPs
32
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
768 KB
Theoretical Performance
65.15 GPixel/s
Pixel Rate
29.86 GPixel/s
179.2 GTexel/s
Texture Rate
104.5 GTexel/s
5.733 TFLOPS
FP32 (float)
3.344 TFLOPS
716.7 GFLOPS
FP64 (double)
836.0 GFLOPS
Board Design
500W
TDP
200W
900 W
Suggested PSU
550 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x DVI
2x HDMI 1.4a
1x DisplayPort 1.2
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Vesuvius
GPU Name
Tahiti
Vesuvius XT
(215-0852022)
GPU Variant
Tahiti PRO3
(215-0821330)
GCN 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
6.2 billion
Transistors
4.313 billion
438 mm²
Die Size
352 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
6.3
Shader Model
5.1
