Radeon R9 295X2 and Radeon HD 6990 - video card comparison
Passmark - benchmark score Radeon R9 295X2 vs Radeon HD 6990
Radeon R9 295X2
8876
Radeon HD 6990
3103
Radeon R9 295X2
Radeon HD 6990
Architecture
GCN 2.0 (2013−2017)
TeraScale 3 (2010−2013)
GPU code name
Vesuvius
Antilles
Market segment
Desktop
Desktop
Release date
April 2014
March 2011
Bus support
PCIe 2.1 x16
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2 x 8-pin
2x 8-pin
Boost clock speed
1018 MHz
-
Core clock speed
-
830 MHz
Floating-point performance
2x 5,733 gflops
2x 2,549.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
6,200 million
2,640 million
Pipelines / CUDA cores
2816
1536
Power consumption (TDP)
500 Watt
375 Watt
Texture fill rate
179.2
79.68
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
2 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1250 MHz
5000 MHz
Memory bandwidth
640 GB/s
160.0 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
1x DVI, 4x mini-DisplayPort
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
11.2 (11_0)
Mantle
-
-
OpenCL
2.0
1.2
OpenGL
4.6
4.4
Shader Model
6.3
5.0
Vulkan
+
N/A
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
-
-
UVD
+
-
ZeroCore
-
-