AMD Radeon R9 M270 vs AMD Radeon R9 M295X vs AMD Radeon R9 M280X
AMD Radeon R9 M270
► remove from comparisonThe AMD Radeon R9 M270 is an upper mid-range, DirectX 12-capable graphics card for notebooks. It is manufactured in 28nm and based on the GCN (Graphics Core Next) architecture from AMD. The R9 M270 is probably just a renamed Radeon HD 8870M with 640 shader units (725 - 775 MHz) and up to 4 GB of GDDR5 memory (1125 MHz / 4500 MHz effective).
According to this information (not yet officially confirmed), the performance of the R9 M270 should exactly match its predecessor. Thus, the GPU should be somewhat slower than a Nvidia GeForce GTX 760M.
Please note: The technical specifications and clock rates are based on speculation and have not been verified by the manufacturer. The R9 M270 has been first seen in the Lenovo Y40.
AMD Radeon R9 M295X
► remove from comparisonThe AMD Radeon R9 M295X is a mobile graphics card that first appeared in the 5K iMac Late 2014 as an upgrade to the Radeon R9 M290X in the base model. The M295X is based on the new Tonga chip and therfore used the third generation of the GCN architecture. The power consumption should be between 100 Watt (like the 780M) to 125 Watts (680MX).
Our gaming benchmarks in the 5K iMac position the M295X usually somewhere between a Geforce GTX 880M to 970M. For demanding games in 5K however, the performance is not enough.
AMD Radeon R9 M280X
► remove from comparisonThe AMD Radeon R9 M280X is a 28 nm DirectX 12 graphics card based on the GCN (Graphics Core Next) architecture. Built primarily for large laptops, the card is positioned in the upper mid-range category as of 2014. It is based on the Saturn chip (Bonaire codename for Desktop R7 260(X)) and clocked at 900 to 1000 MHz (Boost). The R9 M280X offers 896 shader cores, 56 TMUs, 16 ROPs and a 128 Bit memory interface for up to 4 GB GDDR5 memory (1375 MHz / 5500 MHz effective, 88 GB/s).
The performance of the Radeon R9 M280X is on par with the Nvidia GeForce GTX 850M or GTX 950M. Games from 2015 therefore should run in middle to high settings in 1080p. Some more demanding games like Assassin's Creed Unity may only run fluently in reduced settings.
The 640 shader cores can be used with OpenCL 1.2 for general-purpose calculations (as 10 compute units).
Features of the R9 series include video decoding via UVD3 for decoding MPEG-4 AVC/H.264, VC-1, MPEG-2, and Flash directly from the AMD GPU. Multi-View Codec (MVC) and MPEG-4 part 2 (DivX, xVid) HD videos are now compatible as well.
The Radeon R9 also supports automatic graphics switching between the integrated GPU and discrete GPU, called Enduro. The technology supersedes AMD's Dynamic Switchable Graphics and is similar to Nvidia's Optimus. Other features include ZeroCore for reducing power consumption when the display is turned off .
The Power consumption of the R9 M280X is not specified but should be around 70 to 80 Watt and therefore, the GPU is only suited for larger laptops and DTRs.
AMD Radeon R9 M270 | AMD Radeon R9 M295X | AMD Radeon R9 M280X | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Radeon R9 M200 Series |
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Architecture | GCN | GCN 3 | GCN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pipelines | 640 - unified | 2048 - unified | 896 - unified | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Core Speed | 725 MHz | 850 (Boost) MHz | 900 - 1000 (Boost) MHz | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Memory Speed | 4500 MHz | 5448 MHz | 5500 MHz | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Memory Bus Width | 128 Bit | 256 Bit | 128 Bit | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Memory Type | GDDR5 | GDDR5 | GDDR5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Max. Amount of Memory | 4 GB | 4 GB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shared Memory | no | no | no | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
API | DirectX 12 (FL 11_1), Shader 5.0, OpenGL 4.2 | DirectX 12 (FL 12_0), Shader 5.0 | DirectX 12 (FL 12_0), Shader 5.0, OpenGL 4.4 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Transistors | 1.5 Billion | 5 Billion | 2.1 Billion | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
technology | 28 nm | 28 nm | 28 nm | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features | OpenCL 1.2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Notebook Size | large | large | large | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of Announcement | 01.04.2014 | 16.10.2014 | 01.02.2015 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Codename | Tonga | Saturn XT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Power Consumption | 125 Watt |