AMD is launching the Radeon RX 6600 today. In the review, we will look at the first model from the Sapphire Pulse range. In terms of construction, it is a simple compact card, but it will please the operating features more than many models with a large surcharge.
After the more powerful Radeon RX 6600 XT, AMD is also launching the cheaper RX 6600 model. Both are built on the smallest graphics chip yet with the new RDNA2 architecture, which is called Navi 23.
Compared to the more powerful Radeon RX 6600 XT, the novelty does not seem very clipped, but AMD was working not only on the chip, but also on the speed of memory, and overall, the difference in performance is greater than you would expect.
The number of active CUs decreased from 32 to 28, with which the number of stream processors decreased from 2048 to 1792 and the number of texturing units from 128 to 112. Although the 128b bus remained for the memory, the card has slower memories with 14 Gb / s instead of chips with 16 Gb / s RX 6600 XT. Both models have 8 GB of memory, which is just right for current games.
Furthermore, the power limit is quite significantly reduced from 160 to 132 W, and with it the bars of the graphics chip also decreased.
|AMD Radeon RX 6900 XT||AMD Radeon RX 6800 XT||AMD Radeon RX 6800||AMD Radeon RX 6700 XT||AMD Radeon RX 6600 XT||AMD Radeon RX 6600|
|number of transistors||26.8 billion||26.8 billion||26.8 billion||17.2 billion||11.1 billion||11.1 billion|
|basic measure||1825 MHz||1825 MHz||1700 MHz||1968 MHz||– MHz|
|game beat||2015 MHz||2015 MHz||1815 MHz||2321 MHz||2359 MHz||2044 MHz|
|tact’s boost||2250 MHz||2250 MHz||2105 MHz||2581 MHz||2589 MHz||2491 MHz|
|pixel fillrate||288,0 GP/s||288,0 GP/s||202,1 GP/s||165,2 GP/s||165,7 GP/s||159,4 GP/s|
|texture fillrate||720,0 GT/s||648,0 GT/s||505,2 GT/s||413,0 GT/s||331,4 GT/s||279 GT/s|
|half precision||46,08 TFLOPS||41,47 TFLOPS||32,33 TFLOPS||26,43 TFLOPS||21,21 TFLOPS||17,86 TFLOPS|
|single precision||23,04 TFLOPS||20,74 TFLOPS||16,17 TFLOPS||13,21 TFLOPS||10,60 TFLOPS||8,93 TFLOPS|
|Total power consumption of the card||300 W||300 W||250 W||230 W||160 W||132 W|
|memory speed||16 Gb/s||16 Gb/s||16 Gb/s||16 Gb/s||16 Gb/s||14 Gb/s|
|memory capacity||16 GB||16 GB||16 GB||12 GB||8 GB||8 GB|
|bus width||256 b||256 b||256 b||192 b||128 b||128 b|
|permeability||512 GB/s||512 GB/s||512 GB/s||384 GB/s||256 GB/s||224 GB/s|
|introduction||08. 12. 2020||18. 11. 2020||18. 11. 2020||17. 03. 2021||11. 08. 2021||13. 10. 2021|
|power supply||2× 8pin||2× 8pin||2× 8pin||8 + 6pin||8pin||8pin|
|infinity cache||128 MB||128 MB||128 MB||96 MB||32 MB||32 MB|
The Pulse Radeon RX 6600 Gaming model from Sapphire with reference parameters came to us for the editorial test. It’s such a cheap base, but in his case it’s not bad, on the contrary – Sapphire is one of the manufacturers where it seems that cheaper models are not on offer just to get customers to buy more expensive ones.
Screenshot from GPU-z shows reference parameters.
The data from monitoring in GPU-z are relatively modest in comparison with GeForce. Nothing significant is missing, in the data you will find the average GPU temperature and the temperature value for the warmest sensor on the chip. The total power consumption of the card, memory temperature and VRM temperature would also be useful, but these are seldom seen and this is doubly true for cheaper models.
GPU-z read from the firmware stored basic clock 1626 MHz, game clock 2044 and maximum clock with boost 2491 MHz.
The card has a simple compact and simple construction. In height, it can handle two slots, it is not much wider than the blind and is only 19.5 cm long. Large low-profile akxal fans thus occupy most of the top area of the card.
The radiator cover is made of matt black plastic, under it there is a smaller passive with longitudinal ribbing and a 6 mm heatpipe. On the blind is a standard combination of one HDMI 2: 1 capable of 8K at 60 Hz or 4K at 120 Hz and three Displayports.
An eight-pin connector is used for additional power supply. It should be similar for all models. For a card with a TDP 132 W, it is basically an unnecessary luxury, together with the power supply via PCIe, a six-pin would suffice with a reserve. But powering the card through a cable from a source is definitely better than running a bead through a board.
The back of the card is protected by a metal backplate with significant perforations around the perimeter. You would look in vain for a backlight, the question is how many people will miss it.
Source: PCTuning – Všechen obsah by pctuning.cz.
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