AMD Radeon RX 6600 test: a small graphics card for the game in full hd

Radeon of the 6000 series obliges, this sixth reference of the line inherits a GPU doped with RDNA2 architecture.We will not come back in detail to this architecture that we have discussed in our full test of the Radeon RX 6800 XT.

On the technical characteristics side, the Radeon RX 6600 takes up the Navi 23 chip 2 of the XT version.The number of calculation blocks has nevertheless been reduced to 28 CUs, to lead to 1792 calculation units in place of the 2048 of the Radeon RX 6600 XT.We lose 16 units dedicated to textures there, for a total of 112, but we keep the 64 rendering units.Raytracing is not abandoned, but the presence of only 28 "Ray Accelerators" does not allow to hope for a miracle at this level.Finally, the integrated cache system (Infinity Cache) is 32 MB, as on the upper model.The chip displays a surface of 237 mm² and incorporates 11.1 billion transistors engraved in 7 Nm by TSMC, like the whole series.

The maximum frequency reached by the GPU is 2491 MHz after AMD, behind a hundred megahertz compared to the upper model.The manufacturer's technical documentation tells us, however, that the expected frequency in games (GUME GPU Clock) is much lower than that of the upper model, to 2044 MHz on the Radeon RX 6600, against 2359 MHz on the XT.

There are 8 GB of GDDR6 memory operating on a 128 -bit bus.On the other hand, point of chips at 2000 MHz, but chips operating at 1750 MHz, causing a fairly meager memory bandwidth of 224 GB/s.The set is given for an average consumption of 132 watts and operates on a PCIe 4 interface.0 8X.The lack of compatibility PCIe 4.0 to 16 lines is not a defect on such a graphics card;the additional bandwidth of a 16x interface would have brought nothing perceptible.