In terms of overall gaming performance, the graphical capabilities of the AMD FirePro M5950 are significantly better than the AMD Radeon HD 7640G.
The Radeon HD 7640G was released over a year more recently than the FirePro M5950, and so the Radeon HD 7640G is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the FirePro M5950.
The FirePro M5950 has 1024 MB video memory, but the Radeon HD 7640G does not have an entry, so the two GPUs cannot be reliably compared in this area.
The Radeon HD 7640G has 256 Shader Processing Units and the FirePro M5950 has 480. However, the actual shader performance of the Radeon HD 7640G is 127 and the actual shader performance of the FirePro M5950 is 226. The FirePro M5950 having 99 better shader performance and an altogether better performance when taking into account other relevant data means that the FirePro M5950 delivers a noticeably smoother and more efficient experience when processing graphical data than the Radeon HD 7640G.
The Radeon HD 7640G requires 35 Watts to run and the FirePro M5950 requires 30 Watts. The Radeon HD 7640G requires 5 Watts more than the FirePro M5950 to run. The difference is not significant enough for the Radeon HD 7640G to have a noticeably larger impact on your yearly electricity bills than the FirePro M5950.
Radeon HD 7640G is an integrated GPU on the fast-middle-class Trinity CPUs.
It's based on the 32nm Terascale 3 architecture and offers 256 Shader Processing Units, 16 TMUs and 8 ROPs. The memory interface will depend on whether or not the laptop's system RAM is dual channelled (128-bit if so, 64-bit, if not) and the operating memory clock can be up to 800MHz (max speed supported by the CPU). The central unit runs at 496MHz and will go up to 685MHz in Turbo Mode. Expect a TDP of up to 35 Watt.
Its performance is slightly above Intel HD 4000 Graphics but below previous in series - Radeon HD 7620G, despite the naming, due to the lesser Shaders count which proves useful in most of today's modern games.
Some of today's modern games can be playable using the Medium preset though the low preset will have to suffice for most of them. Extremely demanding games (e.g. Crysis 3) are playable but with reduced frame rates.
Professionals in the CAD (Computer Aided Design) and DCC (Digital Content Creation) industries need to be agile while being highly productive both in their office and on-the-go.
AMD works with notebook vendors to provide workstation solutions to deliver advanced performance for applications across all industry segments. AMD FirePro™ professional graphics are compliant with the latest industry standards. Plus, AMD Catalyst™ professional graphics drivers are especially tuned to enable outstanding performance for many major CAD and DCC applications.