Radeon HD 7950 and Radeon HD 7870 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon HD 7870
Radeon HD 7950
4907
Radeon HD 7870
4779
Radeon HD 7950
Radeon HD 7870
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Tahiti
Pitcairn XT
Market segment
Desktop
Desktop
Release date
January 2012
March 2012
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
-
1000 MHz
Floating-point performance
2,867 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
2800 Million
Pipelines / CUDA cores
1792
1280
Power consumption (TDP)
200 Watt
175 Watt
Texture fill rate
89.60
80.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1250 MHz
4800 MHz
Memory bandwidth
240 GB/s
153.6 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
+
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_1)
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
-
1.2.131
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-