AMD Radeon 680M vs AMD Radeon HD 7870 GHz Edition
GPU Specs Compare
Graphics Card
Release Date
Jan 2022
Mar 2012
Generation
Navi II IGP
Southern Islands
Type
Integrated
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
2000 MHz
-
Boost Clock
2200 MHz
-
Memory Clock
System Shared
1200 MHz
Memory
Memory Size
System Shared
2GB
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
256bit
Bandwidth
System Dependent
153.6GB/s
Render Config
Compute Units
12
20
Shading Units
768
1280
TMUs
48
80
ROPs
32
32
RT Cores
12
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
512 KB
Theoretical Performance
Pixel Rate
70.40 GPixel/s
32.00 GPixel/s
Texture Rate
105.6 GTexel/s
80.00 GTexel/s
FP16 (half)
6.758 TFLOPS
-
FP32 (float)
3.379 TFLOPS
2.560 TFLOPS
FP64 (double)
211.2 GFLOPS
160.0 GFLOPS
Graphics Processor
GPU Name
Rembrandt
Pitcairn
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.1 billion
2.8 billion
Die Size
208 mm²
212 mm²
GPU Variant
-
Pitcairn XT(215-0828047)
Board Design
TDP
50W
175W
Outputs
Portable Device Dependent
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
2x 6-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.0
1.2
Vulkan
1.3
1.2
Shader Model
6.7
5.1