Radeon HD 7950 and Radeon R5 340 OEM - video card comparison
Radeon HD 7950
Radeon R5 340 OEM
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Tahiti
Oland
Market segment
Desktop
Desktop
Release date
January 2012
May 2015
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
1250 MHz
780 MHz
Compute units
28
-
Core clock speed
-
730 MHz
Floating-point performance
2,867 gflops
599.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
950 million
Pipelines / CUDA cores
1792
384
Power consumption (TDP)
200 Watt
65 Watt
Texture fill rate
89.60
18.72
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
1250 MHz
4600 MHz
Memory bandwidth
240 GB/s
36.8 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x 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
+
-