AMD Radeon RX 6600 in the test: A restrained performance for 339 euros


With the Radeon RX 6600, AMD is sending the smaller brother of the Radeon RX 6600 XT into the race. The entry-level graphics card is technically based on the XT variant, but has been slimmed down in some areas. The target is the Nvidia GeForce RTX 3060, which should be narrowly beaten by the new RDNA-2-Radeon.

Table of contents

  1. 1 A restrained performance for 339 euros
    1. Exactly like the RX 6600 XT, only a little slower
    2. The GPU is Navi 23 partially deactivated
    3. The XFX Radeon RX 6600 Speedster Swft 210 in detail
  2. 2 clock rates, benchmarks in Full HD & amp; WQHD and ray tracing
    1. Test system and test methodology
    2. The actual average clock rates under load
    3. Benchmarks in 1,920 × 1,080
    4. Benchmarks in 2,560 × 1,440
    5. Benchmarks with ray tracing in Full HD
  3. 3 Volume, temperature, power consumption and OC
    1. Volume & amp; Cooling
    2. Power consumption: games, YouTube, desktop
    3. Energy efficiency in FPS per watt
    4. The RX 6600 can be moderately overclocked
  4. 4 Price and conclusion
    1. RRP and market price
    2. Conclusion

AMD has the entry-level Radeon RX 6600 XT RDNA 2 Segment brought. Now you take a further step, because the new Radeon RX 6600 is located below it, but should still be able to play AAA games smoothly in 1,920 × 1,080 and achieve the performance of the competing GeForce RTX 3060 from Nvidia.

Just like the RX 6600 XT, only a little slower

To achieve this, the small Navi-23 GPU is used again, which simply comes with a reduced number of execution units, while the technology itself remains identical. Both features and memory expansion with 8 GB have remained the same as the larger XT model. AMD uses 339 euros as the RRP, 41 euros less than the Radeon RX 6600 XT. From today the graphics card will be available in stores.

The graphics card will definitely go into the parade, however, in the critical delivery situation. Even if the launch of the Radeon RX 6600 XT went relatively well for the current situation – after all, there were models for several hours to a few days to buy at acceptable prices close to the RRP – it now looks just as catastrophic as it does for all other graphics cards. It can be assumed that the Radeon RX 6600 will suffer a similar fate.

Model RRP at market launch Market launch GeForce RTX 3090 FE 1,549 euros September 24, 2020 GeForce RTX 2080 Ti 1,259 euros September 19, 2018 GeForce RTX 3080 Ti FE 1,199 euros June 3, 2021 Radeon RX 6900 XT 999 euros December 8, 2020 GeForce RTX 2080 FE 849 euros September 19, 2018 GeForce RTX 2080 Super FE 739 euros July 23, 2019 Radeon VII 729 euros February 7, 2019 GeForce RTX 3080 FE 719 euros September 17, 2020 Radeon RX 6800 XT 649 euros November 18, 2020 GeForce RTX 2070 FE 629 Euro October 16, 2018 GeForce RTX 3070 Ti FE 619 Euro June 10, 2021 Radeon RX 6800 579 Euro November 18, 2020 GeForce RTX 2070 Super FE 529 Euro July 2, 2019 GeForce RTX 3070 FE 519 Euro October 27, 2020 Radeon RX Vega 64 499 euros August 14, 2017 Radeon RX 6700 XT 479 euros March 18, 2021 Radeon RX 5700 XT 419 euros July 7, 2019 GeForce RTX 3060 Ti FE 419 euros December 2, 2020 GeForce RTX 2060 Super 419 euros July 2, 2019 Radeon RX 6600 XT 380 Euro August 11, 2021 GeForce RTX 2060 369 Euro January 7, 2019 Radeon RX 5700 369 euros July 7, 2019 Radeon RX 6600 339 euros 13. October 2021 GeForce RTX 3060 329 Euro 25 February 2021

In the test: A custom design by XFX

The XFX Radeon RX 6600 Speedster Swft 210 came to the editorial office for the test. The graphics card is a simple implementation without a lot of gimmicks, which adheres to AMD's reference specifications regarding clock rates and power consumption, but is equipped with its own cooling system.

The GPU is Navi 23 in partially deactivated

Like the Radeon RX 6600 XT, the Radeon RX 6600 is equipped with the 11.1 billion transistor heavy and 237 mm² Navi-23 GPU. In contrast to the large model, which uses all available units on the chip, the Radeon RX 6600 has switched off individual units.

This is exclusively about the compute -Units, of which the full 32, but only 28 pieces are no longer working, which results in 1,792 FP32 shader units. With the same clock rate, the computing power of the latest model is therefore 12.5 percent slower than that of the XT model.

Apart from the CUs there are only a few differences

Apart from that, the Radeon RX 6600 is technically identical to the Radeon RX 6600 XT. There is still a 128-bit wide memory interface and thus also an 8 GB GDDR6 memory. The 32 MB Infinity Cache is still operated at 1.8 GHz. And the PCIe interface is still limited with eight PCIe 4.0 lanes compared to larger graphics cards.

Ultimately, however, AMD does not stop at only distinguishing the Radeon RX 6600 from the “XT” through the FP32-ALUs. The chip developer calls a game clock of 2,044 MHz and a turbo of up to 2,491 MHz for the latest model, which is 315 MHz and 98 MHz lower than the Radeon RX 6600 XT. It should be mentioned, however, that official time stamps in RDNA 2 have nothing in common with reality – and so it is with the Radeon RX 6600.

Less storage cycle and less energy on the RX 6600

A limitation that should not be underestimated is the available memory bandwidth. The 128-bit interface remains, but AMD only uses 14 Gbps memory instead of the 16 Gbps memory otherwise used in the Radeon RX 6000 series. This reduces the memory bandwidth by another 12.5 percent to 224 GB/s, so that the computing power-to-memory bandwidth ratio of both Radeon RX-6600 models is ultimately very similar.

The last difference is the power consumption. AMD calls the Radeon RX 6600 a “typical board power” of 132 watts, the GPU may consume a maximum of 100 watts. That is 28 and 30 watts less than with the Radeon RX 6600 XT.

The Radeon RX 6000 models in comparison Radeon RX 6900 XT Radeon RX 6800 XT Radeon RX 6800 Radeon RX 6700 XT Radeon RX 6600 XT Radeon RX 6600 Architecture RDNA 2 GPU Navi 21 Navi 22 Navi 23 Process TSMC N7P Chip size 519 mm² 336 mm 237 mm² transistors approx. 26.8 billion 17.2 billion 11.1 billion compute units 80 72 60 40 32 28 FP32-ALUs 5,120 4,608 3,840 2,560 2,048 1,792 RT acceleration Yes Game clock 2,015 MHz 2,015 MHz 1,815 MHz 2,424 MHz 2,359 MHz 2,044 MHz Maximum boost clock 2,250 MHz 2,250 MHz 2,105 MHz 2,581 MHz 2,589 MHz 2,491 MHz FP32 performance 20.6 TFLOPS 18.6 TFLOPS 13.9 TFLOPS 12.4 TFLOPS 10.6 TFLOPS 8.9 TFLOPS FP16 -Power 41.3 TFLOPS 37.1 TFLOPS 27.9 TFLOPS 24.8 TFLOPS 21.2 TFLOPS 17.9 TFLOPS texture units 320 288 240 160 128 112 ROPs 128 96 64 memory 16 GB GDDR6 12 GB GDDR6 8 GB GDDR6 memory speed 16 Gbps 14 Gbps memory interface 256 bit 192 bit 128 bit memory bandwidth 512 GB/s 384 GB/s 256 GB/s 224 GB/s Infinity Cache 128 MB 96 MB 32 MB IC bandwidth 2.0 TB/s 1.5 TB/s 0.92 TB/s L2 cache 4 MB 3 MB 2 MB TBP 300 watts 250 watts 230 watts 160 watts 132 watts slot connection PCIe 4.0 × 16 PCIe 4.0 × 8 DirectX 12 Ultimate Yes RRP 999 euros 649 euros 579 euros 479 euros 380 euros 339 euros

The XFX Radeon RX 6600 Speedster Swft 210 in detail

With the Radeon RX 6600 Speedster Swft 210, XFX is sending a simple implementation of AMD's Radeon RX 6600 into the race, which optically fits in well with the rest of the portfolio of XFX's Radeon RX 6000 offshoot. And even if the graphics card is made entirely of plastic, the model still doesn't look cheap. You can't ask for more with an entry-level graphics card.

The Radeon RX 6600 Speedster Swft 210 has a length of 24.5 cm, which is not little for an entry-level model, but ultimately completely unproblematic. The PCB with its seven voltage converter circuits is not what is responsible for the length, because the dual-slot cooler is simply a lot larger than the circuit board.

Entry-level model with two instead of three fans

This consists of a thin copper plate directly above the GPU and otherwise of a large aluminum cooler that takes up the entire length of the graphics card. There are also two heat pipes with a diameter of 6 mm for faster heat transport. Two axial fans with a diameter of 95 mm provide the necessary fresh air, while on the Windows desktop they stop for silent operation. The fans also use the short circuit board to blow air through the cooler to improve cooling.

With the Radeon RX 6600 Speedster Swft 210, XFX adheres completely to AMD's reference specifications. Accordingly, the game clock of the graphics card is 2,044 MHz, the maximum boost is 2,491 MHz. The 8 GB GDDR6 memory is controlled at 7,000 MHz (14 Gbps). The GPU can consume a maximum of 100 watts, whereby the value can be increased manually by up to 20 percent. An 8-pin power plug is required for operation.

A second BIOS, but the same configuration

Three DisplayPort 1.4 DSC interfaces and an HDMI 2.1 connection are available on the graphics card. There is also a second BIOS, but this is identical to the primary BIOS. The XFX adaptation does not use RGB or any other kind of lighting.

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The XFX Radeon RX 6600 Speedster Swft 210
Monitor connections of the XFX Radeon RX 6600 Speedster Swft 210
Back of the XFX Radeon RX 6600 Speedster Swft 210
Feature XFX Radeon RX 6600
Speedster Swft 210 Card PCB design XFX length, width 24.5 cm, 13.0 cm Power supply 1 × 8 -Pin cooler design 2.0 slot heat sink 2 heat pipes
aluminum core/radiator and copper plate Weight 611 grams Fan 2 × 95 mm (axial) Fan switched off (2D) Yes Starting speed 1,300 revolutions Clock
GPU base 1,626 MHz GPU average 2,044 MHz GPU maximum 2,491 MHz memory 7,000 MHz memory size 8 GB GDDR6 power consumption standard TGP 100 watts maximum TGP +20 percent connections 3 x DisplayPort 1.4 DSC
1 x HDMI 2.1

On the next page: clock rates, benchmarks in Full HD & amp; WQHD and ray tracing