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AMD RX 6400 is 14% slower when installed on older PCs

One of the things that the common user doesn’t know is that AMD’s low end in terms of graphics cards is quite limited in physical performance. And it is that the AMD RX6400 and the RX 6500 XT can only choose to exchange data with RAM and CPU via a connector PCIe 4.0 x4but what if we use the same lines but in PCIe 3.0 is this the most common user? Well, the performance drops drastically to the point of not making the GPU appealing.

And it is that the data that have been offered by means of a comparison demonstrate it. The reduction in bandwidth by AMD is a very important bottleneck for the range of GPUs that it is and above all, who it is aimed at: the less fortunate user and therefore the one who updates the least his PC. After 24 games tested and comparing the two versions of the interface (PCIe 3.0 versus PCIe 4.0 both at x4) what can be seen is a drop in 14% in 1080p or 2Kand none other than 23% under 4K.

AMD RX 6400 and older PCs with PCIe 3.0: a bad combination


Or what amounts to the same, AMD forces its users to make the jump to PCIe 4.0 if they want to take advantage of all the “potential” (note that in performance it is not even brilliant or competitive) of this graphics card . To get an idea of ​​the debacle it is to have a PC with PCIe 3.0 and to buy this GPU, a RX570 With its years behind it, it would be faster than this RX 6400 in such conditions.

But it is that even his direct rival in this fight, the GTX1650it is really faster and much faster than this RX 6400 in the conditions mentioned, being much less attractive for the average user who not only sees that the price is higher in general, but that it is directly a bad investment if your PC does not support said interface version.

So does this launch make sense? Well, if you take into account that the vast majority of users are still on PCIe 3.0 and that the price of motherboards and components in general continues to rise, really not much. As we said at the time, this looks more like a launch to better take advantage of wafers with these chips. Navi 24XL and justify the corresponding version for the OEM market as a graphic useful in its market segment, the entry level.

Its price is contained, its consumption is low, AMD has reduced its costs by adding only 4 PCIe 4.0 lines, its VRAM is quite limited in the middle of 2022 and the result is that a RX470 with his seniority on his back, even under the best conditions of the above, he passes over him, even a R9 290. In short, it doesn’t seem to be a graphics designed for the gamer, it seems designed to make the business of PC manufacturers viable by taking advantage of the market situation and this is reflected in the performance.

VIA: TechPowerUp

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