Radeon HD 7870 and Iris Plus Graphics 645 - video card comparison
Passmark - benchmark score Radeon HD 7870 vs Iris Plus Graphics 645
Radeon HD 7870
4779
Iris Plus Graphics 645
1779
Radeon HD 7870
Iris Plus Graphics 645
Architecture
GCN (2011−2017)
Gen. 9.5 Coffee Lake (2019)
GPU code name
Pitcairn XT
Kaby Lake GT3e
Market segment
Desktop
Laptop
Release date
March 2012
July 2019
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
1150 MHz
Core clock speed
1000 MHz
300 MHz
Manufacturing process technology
28 nm
14 nm
Number of transistors
2800 Million
-
Pipelines / CUDA cores
1280
48
Power consumption (TDP)
175 Watt
15 Watt
Texture fill rate
80.00
50.40
Memory type
GDDR5
DDR3, DDR4
Maximum RAM amount
2 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
4800 MHz
System Shared
Memory bandwidth
153.6 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DirectX
12 (11_1)
12 (12_1)
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.2.131
1.1.103
Quick Sync
-
+