Based on foreign press reports, the performance of the Radeon RX 6750 XT and Radeon RX 6650 XT graphics cards presented yesterday has really grown compared to the regular Radeon RX 6700 XT and Radeon RX 6600 XT. But is that enough to catch up and even overtake the competition? We have studied the reviews of both accelerators from the portals PCWorld and TechPowerUp and present the most important excerpts below.
Let’s briefly recall the properties. Both graphics cards are based on exactly the same GPUs as their predecessors. The only difference is their slightly increased gaming and boost frequencies. In the case of the Radeon RX 6750 XT, the basis is the Navi 22 chip with 2560 Stream processors operating in the frequency range from 2495 to 2600 MHz. Its predecessor chip, in turn, works in the range from 2424 to 2581 MHz.
The Radeon RX 6750 XT also has faster GDDR6 memory. It operates at 18 Gbps per pin instead of 16 Gbps. This increased the bandwidth from 384 to 432 GB / s. The bit width of the memory bus has not changed. It’s still 192 bits. The volume also remained the same – 12 GB. The nominal power consumption of the card has increased from 230 to 250 watts.
The Radeon RX 6650 XT model, in turn, is based on the Navi 23 chip with 2048 stream processors. Its gaming frequency is 2410 MHz, in boost mode it increases to 2635 MHz. The Radeon RX 6600 XT, in turn, has frequencies of 2359 and 2589 MHz. The new accelerator also received faster GDDR6 memory at 17.5 Gbps (instead of 16 Gbps). The memory bus width is the same – 128 bits. Memory bandwidth increased from 256 to 288 GB/s. The declared power consumption of the accelerator has increased from 160 to 180 watts.
PCWorld reviewed the Sapphire Radeon RX 6650 XT Nitro+ and Sapphire Radeon RX 6750 XT Nitro+ accelerators. They have a slight factory overclocking of the graphics chip, which usually does not affect the overall performance. The MSI Radeon RX 6650 XT Gaming X and ASUS Radeon RX 6750 XT Strix OC models, which were in the hands of TechPowerUp journalists, also have additional overclocking.
Both cards reportedly benefited from cosmetic improvements in the form of higher GPU frequency, faster memory, and increased power consumption, but don’t expect significant improvements. For example, the Radeon RX 6650 XT is on average 5% faster than the regular Radeon RX 6600 XT in games at 1080p (the goal for this card).
The advantage of the new Radeon RX6600XT vs. the GeForce RTX 3060 model is now 13%. At the same time, the new product is still slower than the GeForce RTX 3060 Ti accelerator, which is 10% faster than it. The Radeon RX 6700 XT is 13% faster than the Radeon RX 6650 XT.
The Radeon RX 6750 XT, on the other hand, is an average of 8% faster than the regular Radeon RX 6700 XT in games with 1440p resolution. That’s quite enough to catch up with the GeForce RTX 3070 and at the same time reduce the gap to the GeForce RTX 3070 Ti to just 6%. The proprietary Radeon RX 6800 is 11% faster than the new model. The gallery below shows performance charts for Radeon RX 6650 XT and Radeon RX 6750 XT in various games at 1080p and 1440p without ray tracing, provided by PCWorld.
In games with ray tracing “by tradition”, the Radeon 6000 cards are not so rosy. Both accelerators lag behind not only their direct competitors, but also the initially less productive GeForce solutions. For example, the Radeon RX 6750 XT is often even inferior to the previous generation Turing GeForce RTX 2080.
The Radeon RX 6650 XT, in turn, is often slower than the GeForce RTX 2070, and in some cases even inferior to the GeForce RTX 2060. Below are graphs of accelerator tests in ray-traced games from TechPowerUp and PCWorld at 1080p and 2160p resolutions.
According to PCWorld, the maximum power consumption of the system with the Sapphire Radeon RX 6650 XT Nitro+ installed was 257 watts. At the same time, the accelerator did not heat up above 66 degrees Celsius in tests. MSI Radeon RX 6650 XT Gaming X Portal TechPowerUp only warmed up to 64 degrees. The graphics card itself consumed a maximum of 200 watts of power. And its maximum noise was 27 dBA.
The maximum power consumption of a PC with Sapphire Radeon RX 6750 XT Nitro+ was 430 watts. TechPowerUp, in turn, reports that the maximum consumption of the ASUS Radeon RX 6750 XT Strix OC accelerator did not exceed 293 W (271 W in games). At the same time, the card turned out to be quite loud, even when using the second, “silent” BIOS. Its maximum noise figure was 38 dBA.
When using a regular BIOS, the average temperature of the ASUS Radeon RX 6750 XT Strix OC under load was 57 degrees, and when using a “quiet” BIOS it rose to 60 degrees. The Sapphire Radeon RX 6750 XT Nitro+ card, in turn, warmed up to 63 degrees.