nice test, but nobody should pair it with a Z-Board and the perf-hit with only 2666 RAM is huge like the test of games nexus showed
Confirmed also by Steven from Techspot/HU who also did testing with both RAM speeds (3200 vs 2666), on it's "i5 10400" review, like GN. The RAM difference meant the cpu performance went down from beating the 3600 in some games, to being worse than it.
B460 boards limit ram speed to 2666MHz when paired with i5 cpus (and 2933MHz with i7/i9). To be able to run them paired with 3200 ram speed, one needs to by a Z490 board, and a decent one (VRM and features wise) is like almost $200. That completely changes the picture on the cpu+motherboard bundle value proposition and performance of the CPU itself.
From the B460 Tomahawk manual itself, for example:
Intel® Core™ i7/ i9 ▪ Supports up to DDR4 2933 MHz
Intel® Core™ i5 and below ▪ Supports up to DDR4 2666 MHz
This review, even without having tested both RAM speeds, should at least pointed that B460 board limitation and potential performance hit, because the B-series is exactly the sweetspot board type that many will buy for this kind of cpu, considering the price point of both, which something that was said on the review itself:
For multiplier-locked chips like the i5-10400F, you could save a lot of money by opting for cheaper H470 or B460 chipset motherboards.
Yes, but with a performance hit due the 2666Mhz ram speed limitation. Without the said clarification, that statement and conclusions are misleading for those that then buy it with a B460 board, convinced they'll get the same CPU performance as shown here when using a Z490 / 3200 setup.