Nvidia GeForce GTX 675MX vs AMD Radeon R9 390 X2

Nvidia GeForce GTX 675MX on Amazon USA
AMD Radeon R9 390 X2 on Amazon USA

Comparison of the technical characteristics between the graphics cards, with Nvidia GeForce GTX 675MX on one side and AMD Radeon R9 390 X2 on the other side, also their respective performances with the benchmarks. The first is dedicated to the laptop sector, it has 960 shading units, a maximum frequency of 0.7 GHz, its lithography is 28 nm. The second is used on the desktop segment, it includes 5120 shading units, a maximum frequency of 1.0 GHz, its lithography is 28 nm. The following table also compares the boost clock, the number of shading units (if indicated), of execution units, the amount of cache memory, the maximum memory capacity, the memory bus width, the release date, the number of PCIe lanes, the values ​​obtained in various benchmarks.

Specification comparison:

Graphics card Nvidia GeForce GTX 675MX AMD Radeon R9 390 X2
Market (main) Laptop Desktop
Release date Q4 2012 Q3 2015
Model number N13E-GSR-A2 215-0880030,
Grenada PRO
GPU name GK104 Grenada
Architecture Kepler GCN 2.0
Generation GeForce 600M Pirate Islands R9 300
Lithography 28 nm 28 nm
Transistors 3,540,000,000 6,200,000,000
Bus interface MXM-B (3.0) PCIe 3.0 x16
GPU base clock 654 MHz 1,000 MHz
GPU boost clock 654 MHz 1,000 MHz
Memory frequency 900 MHz 1,350 MHz
Effective memory speed 3.6 Gbps 5.4 Gbps
Memory size 2 GB 16 GB
Memory type GDDR5 GDDR5
Memory bus 256 bit 1024 bit
Memory bandwidth 115.2 GB/s 691.2 GB/s
TDP 100 W 580 W
Cores (compute units, SM, SMX) 5 80
Shading units (cuda cores) 960 5,120
TMUs 80 320
ROPs 32 128
Cache memory 512 KB 2 MB
Pixel fillrate 13.1 GP/s 128.0 GP/s
Texture fillrate 52.3 GT/s 320.0 GT/s
Performance FP32 (float) 1.3 TFLOPS 10.2 TFLOPS
Performance FP64 (double) 52.3 GFLOPS 1.3 TFLOPS

Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.

We can better compare what are the technical differences between the two graphics cards.

Performance comparison with the benchmarks:

Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench.

FP32 Performance in GFLOPS
AMD Radeon R9 390 X2 10,240
Nvidia GeForce GTX 675MX 1,256

The difference is 715%.

Single-precision floating-point format, also called FP32, is a computer number format that typically occupies 32 bits in PC memory. This represents a wide dynamic range of numeric values that employs a floating point. FP32 power helps assess the video card's capabilities for generating rendering workloads. Video games use INT32 and FP32 cores to manage calculations with integers and numbers with decimals in order to produce maps, bone matrices on which the vertex shaders will calculate the vertices. Values in single precision format are mainly used in video games and 3D software.

See also:

Nvidia GeForce GTX 675M


Nvidia GeForce GTX 675MX AMD EquivalentAMD Radeon R9 390 X2 Nvidia Equivalent

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