Radeon HD 7950 and Radeon R9 285 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon R9 285
Radeon HD 7950
4907
Radeon R9 285
6880
Radeon HD 7950
Radeon R9 285
Architecture
GCN 1.0 (2012−2020)
GCN 3.0 (2014−2017)
GPU code name
Tahiti
Tonga
Market segment
Desktop
Desktop
Release date
January 2012
September 2014
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Boost clock speed
1250 MHz
-
Compute units
28
-
Core clock speed
-
918 MHz
Floating-point performance
2,867 gflops
3,290 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
5,000 million
Pipelines / CUDA cores
1792
1792
Power consumption (TDP)
200 Watt
190 Watt
Texture fill rate
89.60
102.8
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1250 MHz
5.5 GB/s
Memory bandwidth
240 GB/s
176.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 (12_0)
Mantle
-
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
-
1.2.170
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-