AMD Radeon HD 6990 vs AMD Radeon R9 295X2
GPU · Specs Compare
Graphics Card
Release Date
Mar 2011
Apr 2014
Generation
Northern Islands
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1250 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
160.0GB/s
320.0GB/s
Render Config
Compute Units
24
44
Shading Units
1536
2816
TMUs
96
176
ROPs
32
64
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
26.56 GPixel/s
65.15 GPixel/s
Texture Rate
79.68 GTexel/s
179.2 GTexel/s
FP32 (float)
2.550 TFLOPS
5.733 TFLOPS
FP64 (double)
637.4 GFLOPS
716.7 GFLOPS
Graphics Processor
GPU Name
Antilles
Vesuvius
GPU Variant
Antilles XT(215-0807027)
Vesuvius XT(215-0852022)
Architecture
TeraScale 3
GCN 2.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
2.64 billion
6.2 billion
Die Size
389 mm²
438 mm²
Board Design
TDP
375W
500W
Suggested PSU
750 W
900 W
Outputs
1x DVI4x mini-DisplayPort 1.2
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Graphics Features
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
OpenCL
1.2
2.0
Vulkan
N/A
1.2
Shader Model
5.0
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.