Qualcomm Adreno 613 vs AMD Radeon HD 7640G + HD 7610M Dual Graphics vs AMD Radeon HD 7610M

Qualcomm Adreno 613

The Adreno 613 is an entry-level graphics card, which is integrated in the Snapdragon 4 Gen 2. It is intended for use in low-cost smartphones.

The performance is on a par with the ARM Mali-G52 MP2 (e.g. Helio G85) and is just ahead of the Adreno 612 in the Snapdragon 678. Although it is the successor to the Adreno 619 in the SD 4 Gen 1, the performance is significantly lower.

It works with a maximum clock frequency of 955 MHz and is manufactured in the 4 nm process at Samsung (in the SD 4 Gen 2). It supports common graphics APIs such as OpenCL 2.0, OpenGL ES 3.2 and Vulkan 1.1.

AMD Radeon HD 7640G + HD 7610M Dual Graphics

The AMD Radeon HD 7640G + HD 7610M Dual Graphics is the combination of a integrated AMD Radeon HD 7640G APU processor graphics card and a dedicated AMD Radeon HD 7610M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Dual Graphics solution depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Therefore, due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. In a best case scenario, the performance is almost similar to a GeForce GT 640M, but significantly lower in most other games.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

AMD Radeon HD 7610M

The AMD Radeon HD 7610M (sometimes also called AMD Radeon HD 7610M) is a low-end middle class graphics card for laptops in 2011. It is based on the same chip as the Radeon HD 6630M but features only 5 SIMD blocks and therefore just 400 shader units. Furthermore, the clock rate is reduced to 450 MHz. It is still built in 40nm and supports DirectX 11.

The 400 Stream processors are still based on the 5D architecture similar to the 5000 series. Therefore, the number of shaders is not comparable to the 1D cores of current Nvidia GPUs. The Tessellation performance should be improved (like the desktop 6800 series) with the new cards. The Stream processors can be used with DirectX 11, OpenGL 4.1, DirectCompute 11 and OpenCL. With the later two the cores can also be used for general computations like transcoding videos.

The 3D performance is slightly below the old Radeon HD 6530M due to the slow clock rate and the 400 shaders. Therefore, demanding games of 2011 like Battlefield 3 or Anno 2070 are running fluently only in low detail settings. Games with less demanding 3D engines like CoD MW3 should also run in high details.

The new UVD3 video decoder supports the decoding of MPEG-4 AVC/H.264, VC-1, MPEG-2, Flash and now also Multi-View Codec (MVC) and MPEG-4 part 2 (DivX, xVid) HD videos on the graphics card.

Furthermore, the HD 7600M series integrates a HD audio controller to transmit HD Audio (TrueHD or DTS Master Audio) over HDMI and DisplayPort (e.g. for Blu-Ray videos).

The AMD HD3D Technology offers support for Blu-Ray 3D and 3D displays (integrated and external). However, the solution is not as mature as Nvidias 3D Vision.

Thanks to Eyefinity the graphics chip is able to theoretically drive up to 5 monitors simultaneously. However, this only works if the laptop features enough DisplayPort outputs.