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GPU Comparison
AMD Radeon HD 6870M vs AMD Radeon R9 M385X
AMD Radeon HD 6870M vs AMD Radeon R9 M385X
VS
AMD Radeon HD 6870M
AMD Radeon R9 M385X
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 4GB VRAM Radeon R9 M385X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M385X 's Advantages
Released 4 years and 4 months late
Boost Clock1100MHz
More VRAM (4GB vs 1GB)
Larger VRAM bandwidth (76.80GB/s vs 64.00GB/s)
96 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870M
1.08 TFLOPS
Radeon R9 M385X
+82%
1.971 TFLOPS
Radeon HD 6870M
VS
Radeon R9 M385X
Graphics Card
Jan 2011
Release Date
May 2015
Vancouver
Generation
Gem System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1000 MHz
-
Boost Clock
1100 MHz
1000 MHz
Memory Clock
1200 MHz
Memory
1024MB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
64.00GB/s
Bandwidth
76.80GB/s
Render Config
-
SM Count
-
10
Compute Units
14
800
Shading Units
896
40
TMUs
56
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
10.80 GPixel/s
Pixel Rate
17.60 GPixel/s
27.00 GTexel/s
Texture Rate
61.60 GTexel/s
-
FP16 (half)
-
1080 GFLOPS
FP32 (float)
1.971 TFLOPS
-
FP64 (double)
123.2 GFLOPS
Graphics Processor
Granville
GPU Name
Strato
Granville XT (216-0769024)
GPU Variant
Strato XT
TeraScale 2
Architecture
GCN 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.04 billion
Transistors
2.08 billion
166 mm²
Die Size
160 mm²
Board Design
50W
TDP
Unknown
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
-
Power Connectors
-
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.2.170
-
CUDA
-
5.0
Shader Model
6.5
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