Radeon HD 7870 XT and Radeon HD 7550M - video card comparison
Passmark - benchmark score Radeon HD 7870 XT vs Radeon HD 7550M
Radeon HD 7870 XT
4603
Radeon HD 7550M
478
Radeon HD 7870 XT
Radeon HD 7550M
Architecture
GCN 1.0 (2012−2020)
Terascale 2 (2009−2015)
GPU code name
Tahiti
Thames-LP / Pro
Market segment
Desktop
Laptop
Release date
November 2012
January 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
975 MHz
550 MHz
Core clock speed
925 MHz
450 MHz
Floating-point performance
2,995 gflops
480.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
716 million
Pipelines / CUDA cores
1536
400
Power consumption (TDP)
185 Watt
14 Watt
Texture fill rate
93.60
12.00
Memory type
GDDR5
GDDR5 / DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
6000 MHz
3200 / 1800 MHz
Memory bandwidth
192.0 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A