AMD Radeon R9 390 X2 vs AMD Radeon R9 295X2
GPU Specs Compare
Graphics Card
Release Date
Sep 2015
Apr 2014
Generation
Pirate Islands
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1350 MHz
1250 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
512bit
512bit
Bandwidth
345.6GB/s
320.0GB/s
Render Config
Compute Units
40
44
Shading Units
2560
2816
TMUs
160
176
ROPs
64
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
1024 KB
Theoretical Performance
Pixel Rate
64.00 GPixel/s
65.15 GPixel/s
Texture Rate
160.0 GTexel/s
179.2 GTexel/s
FP32 (float)
5.120 TFLOPS
5.733 TFLOPS
FP64 (double)
640.0 GFLOPS
716.7 GFLOPS
Graphics Processor
GPU Name
Grenada
Vesuvius
GPU Variant
Grenada PRO(215-0880030)
Vesuvius XT(215-0852022)
Architecture
GCN 2.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
6.2 billion
6.2 billion
Die Size
438 mm²
438 mm²
Board Design
TDP
580W
500W
Suggested PSU
950 W
900 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI4x mini-DisplayPort 1.2
Power Connectors
4x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.2
1.2
Shader Model
6.3
6.3