Radeon HD 7950 and Radeon X1550 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon X1550
Radeon HD 7950
4907
Radeon X1550
68
Radeon HD 7950
Radeon X1550
Architecture
GCN 1.0 (2012−2020)
Ultra-Threaded SE
GPU code name
Tahiti
RV516
Market segment
Desktop
Desktop
Release date
January 2012
2007
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
1250 MHz
-
Compute units
28
-
Core clock speed
-
550 MHz
Floating-point performance
2,867 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
4,313 million
105 million
Pipelines / CUDA cores
1792
-
Power consumption (TDP)
200 Watt
27 Watt
Texture fill rate
89.60
2.200
Memory type
GDDR5
DDR2
Maximum RAM amount
3 GB
256 MB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1250 MHz
800 MBps
Memory bandwidth
240 GB/s
12.8 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x VGA, 1x S-Video
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
9.0c (9_3)
Mantle
-
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1
Shader Model
5.1
3.0
Vulkan
-
N/A
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-