Radeon HD 6630M vs Radeon HD 8870M
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6630M and 2GB VRAM Radeon HD 8870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon HD 8870M Advantages
Released 2 years and 3 months late
Boost Clock775MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (72.00GB/s vs 25.60GB/s)
160 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6630M
480
Radeon HD 8870M
+106%
992
Graphics Card
Jan 2011
Release Date
Apr 2013
Vancouver
Generation
Solar System
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
725 MHz
-
Boost Clock
775 MHz
800 MHz
Memory Clock
1125 MHz
Memory
1024MB
Memory Size
2GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
128bit
25.60GB/s
Bandwidth
72.00GB/s
Render Config
6
Compute Units
10
480
Shading Units
640
24
TMUs
40
8
ROPs
16
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
4.000 GPixel/s
Pixel Rate
12.40 GPixel/s
12.00 GTexel/s
Texture Rate
31.00 GTexel/s
480.0 GFLOPS
FP32 (float)
992.0 GFLOPS
-
FP64 (double)
62.00 GFLOPS
Board Design
26W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
Graphics Processor
Whistler
GPU Name
Venus
Whistler LP
GPU Variant
Venus XT
(216-0846000)
(216-0846000)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.716 billion
Transistors
1.5 billion
104 mm²
Die Size
123 mm²
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
2.1 (1.2)
N/A
Vulkan
1.2.170
5.0
Shader Model
6.5 (5.1)
