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GPU Comparison
AMD Radeon HD 6990M vs AMD Radeon R9 M290X Mac Edition
AMD Radeon HD 6990M vs AMD Radeon R9 M290X Mac Edition
VS
AMD Radeon HD 6990M
AMD Radeon R9 M290X Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 2GB VRAM Radeon R9 M290X Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990M 's Advantages
96 additional rendering cores
AMD Radeon R9 M290X Mac Edition 's Advantages
Released 3 years and 4 months late
Boost Clock975MHz
Larger VRAM bandwidth (174.7GB/s vs 115.2GB/s)
Lower TDP (80W vs 100W)
Score
Benchmark
FP32 (float)
Radeon HD 6990M
1.602 TFLOPS
Radeon R9 M290X Mac Edition
+24%
1.997 TFLOPS
Radeon HD 6990M
VS
Radeon R9 M290X Mac Edition
Graphics Card
Jul 2011
Release Date
Nov 2014
Vancouver
Generation
Crystal System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
975 MHz
900 MHz
Memory Clock
1365 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
115.2GB/s
Bandwidth
174.7GB/s
Render Config
-
SM Count
-
14
Compute Units
16
1120
Shading Units
1024
56
TMUs
64
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
Theoretical Performance
22.88 GPixel/s
Pixel Rate
31.20 GPixel/s
40.04 GTexel/s
Texture Rate
62.40 GTexel/s
-
FP16 (half)
-
1.602 TFLOPS
FP32 (float)
1.997 TFLOPS
-
FP64 (double)
124.8 GFLOPS
Graphics Processor
Blackcomb
GPU Name
Pitcairn
Blackcomb XTX (216-0811030)
GPU Variant
Pitcairn PRO (215-0828062)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.7 billion
Transistors
2.8 billion
212 mm²
Die Size
212 mm²
Board Design
100W
TDP
80W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
5.1
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