Qualcomm Adreno 320 vs Qualcomm Adreno 510 vs Qualcomm Adreno 304

Qualcomm Adreno 320

The Qualcomm Adreno 320 is a GPU for smartphones and tablets that is integrated into Qualcomm SoCs. It was introduced in the end of 2012 and was primarily used for Android devices. The graphics card uses a technology called FlexRender. It can switch "intelligently" switch between TBR (TBR Tile Based Renderer) and the classic direct rendering. 

The Adreno 320 has Unified Shaders and supports OpenGL ES 3.0. The performance compared to the Adreno 200-series is supposed to be improved by the factor 3-4. 

The Adreno 320 is used in Snapdragon S4 SoCs like the AQP8064.

Qualcomm Adreno 510

The Qualcomm Adreno 510 is a mobile graphics card for mid-range smartphones and tablets (mostly Android based). It is included in the Qualcomm Snapdragon 650 and 652 SoCs and based on the Adreno 500 architecture (like the Adreno 520 in the S820, which should be fully compatible in software).

The GPU supports modern standards like Vulkan 1.0 (according to Wikipedia), OpenGL ES 3.1 + AE (3.2 in other sources), OpenCL 2.0 and DirectX 12 (FL 12.1 according to Wikipedia, 11.1 according to Qualcomm). Furthermore, the GPU supports Universal Bandwidth Compression (UBWC) to save memory bandwidth.

Compared the the faster Adreno 530, the 510 is currently produced in the older 28nm process (650 and 652) and should offer less ALUs. The clock speed is not disclosed.

Early benchmarks and performance ratings from Qualcomm position the GPU on a level with the old Adreno 330 (former high end GPU) in the Snapdragon 810. Therefore, it should be able to handle most Android games up to Full HD fluently.

Qualcomm Adreno 304

The Qualcomm Adreno 304 is an entry-level integrated graphics card for (mostly Android based) smartphones and tablets that is used for mainstream SoCs of the Qualcomm Snapdragon 210 series (e. g. MSM8909).

The Adreno 304 usually only offers half of the performance of the the Adreno 320 and is only slightly ahead of the Mali-400 MP4. Very demanding Android games of 2013 may not run completely smooth, but simple titles like Angry Birds and the usual multimedia tasks are no problem.

As all other Adreno 30x GPUs, the Adreno 304 includes 24 ALUs (6 in other sources) that are built as unified shaders. More information on the architecture can be found on Github.