AMD Radeon HD 6490M vs AMD Radeon R9 M290X
We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6490M and 4GB VRAM Radeon R9 M290X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M290X 's Advantages
Released 3 years late
Boost Clock900MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 25.60GB/s)
1120 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6490M
0.256 TFLOPS
Radeon R9 M290X
+800%
2.304 TFLOPS
Graphics Card
Jan 2011
Release Date
Jan 2014
Vancouver
Generation
Crystal System
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
850 MHz
-
Boost Clock
900 MHz
800 MHz
Memory Clock
1200 MHz
Memory
512MB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
25.60GB/s
Bandwidth
153.6GB/s
Render Config
2
Compute Units
20
-
-
-
160
Shading Units
1280
8
TMUs
80
4
ROPs
32
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
512 KB
-
-
-
Theoretical Performance
3.200 GPixel/s
Pixel Rate
28.80 GPixel/s
6.400 GTexel/s
Texture Rate
72.00 GTexel/s
-
-
-
256.0 GFLOPS
FP32 (float)
2.304 TFLOPS
-
FP64 (double)
144.0 GFLOPS
Board Design
Unknown
TDP
100W
-
-
-
Portable Device Dependent
Outputs
No outputs
-
Power Connectors
None
Graphics Processor
Seymour
GPU Name
Neptune
Seymour XTX S3
(216-0809024)
GPU Variant
Neptune XT
(216-0847000)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.37 billion
Transistors
2.8 billion
67 mm²
Die Size
212 mm²
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
-
-
-
5.0
Shader Model
5.1
