Radeon R9 295X2 vs Radeon R9 280X
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R9 295X2 's Advantages
Released 6 months late
More VRAM (4GB vs 3GB)
Larger VRAM bandwidth (320.0GB/s vs 288.0GB/s)
768 additional rendering cores
Radeon R9 280X 's Advantages
Boost Clock1000MHz
Lower TDP (250W vs 500W)
Score
Benchmark
FP32 (float)
Radeon R9 295X2
+39%
5733
Radeon R9 280X
4096
Graphics Card
Apr 2014
Release Date
Oct 2013
Volcanic Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
1000 MHz
1250 MHz
Memory Clock
1500 MHz
Memory
4GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
512bit
Memory Bus
384bit
320.0GB/s
Bandwidth
288.0GB/s
Render Config
44
Compute Units
32
2816
Shading Units
2048
176
TMUs
128
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
32.00 GPixel/s
179.2 GTexel/s
Texture Rate
128.0 GTexel/s
5.733 TFLOPS
FP32 (float)
4.096 TFLOPS
716.7 GFLOPS
FP64 (double)
1024 GFLOPS
Board Design
500W
TDP
250W
900 W
Suggested PSU
600 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
2x DVI
1x 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 XTL
(215-0821065)
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
