AMD Radeon HD 6990M vs AMD Radeon R9 295X2
GPU Specs Compare
Graphics Card
Release Date
Jul 2011
Apr 2014
Generation
Vancouver
Volcanic Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Memory Clock
900 MHz
1250 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
115.2GB/s
320.0GB/s
Render Config
Compute Units
14
44
Shading Units
1120
2816
TMUs
56
176
ROPs
32
64
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
22.88 GPixel/s
65.15 GPixel/s
Texture Rate
40.04 GTexel/s
179.2 GTexel/s
FP32 (float)
1.602 TFLOPS
5.733 TFLOPS
FP64 (double)
-
716.7 GFLOPS
Graphics Processor
GPU Name
Blackcomb
Vesuvius
GPU Variant
Blackcomb XTX(216-0811030)
Vesuvius XT(215-0852022)
Architecture
TeraScale 2
GCN 2.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
6.2 billion
Die Size
212 mm²
438 mm²
Board Design
TDP
100W
500W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
None
2x 8-pin
Suggested PSU
-
900 W
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