Soll man heute schon Grafikkarten mit PCIe 5 kaufen?
Jetzt erscheinen die ersten Grafikkarten mit PCIe 5 auf dem Markt.
Kann man diese bedenkenlos kaufen, oder soll man vorerst bei einer Grafikkarte mit PCIe 4 bleiben, und abwarten bis sich PCIe 5 fest etabliert hat?
Ganz konkrete Frage:
Wenn es bei PCIe 5 Probleme mit der Treibergeschwindigkeit auf der Grafikarte oder der Leitungsqualität auf dem Motherboard gibt, wird das dann von der CPU erkannt und dann diese Grafikkarte mit dem weniger kritischen PCIe 4 angesteuert, oder gibt es dann weiterhin Übertragungsfehler, weil CPU und Grafikkarte ständig versuchen die hähere Transgferfrequenz zu verwenden?
Wenn der Fehler von der CPU automatisch erkannt würde, dann wäre der Kauf einer PCIe 5 Karte unkritisch, weil diese dann mit Sicherheit bei PCIe 4 funktionieren würde.
(1 votes)
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Generally, PCIe works so that each device clearly indicates which PCIe version it supports maximum. This is marked on an electronic level, i.e. quasi a circuit on the circuit board, which can be read out and contains information about the PCIe connection of the device.
Important here is the word “maximum” – because PCIe is always backwards compatible. Each device that PCIe 5.0 can also be 4.0, 3.0, 2.0 and 1.0. Therefore, it is in fact that the motherboard in all devices queries which PCIe version supports them, and then selects a version that works for both. This means that both a PCIe 5.0 graphics card in a PCIe 4.0 motherboard/slot and a PCIe 4.0 graphics card in a PCIe 5.0 motherboard/slot would select the motherboard PCIe 4.0, and the graphics card would run accordingly in PCIe 4.0 mode. For most motherboards, you can manually specify a PCIe version in the BIOS. In the worst case, you could put it manually on PCIe 4.0.
But that should not be necessary, because there are no half things for PCIe. Either a certain PCIe version is supported or not. PCIe is a standard, and if a device pretends to support the PCIe 5.0 standard, but in connection with it makes problems, then it violates the standard. This would then simply be a faulty product with clear design or manufacturing error, a manufacturer’s fault and probably even a warranty case.
So it is not to be expected that there are any problems. If all devices work normally, the latest PCIe version is automatically used, supported by both sides.
Who buys a Nvidia 50XX now clearly has too much money or is a streamer (twitch)… or both.
The maps are not even blurring on the market and then more and more GENAU comes such questions.
It has nothing to do with cleverness (actually the opposite).
Wait until they have other people, make reviews, these Grakas testing and and and.
The 5070 alone should cost over 1,100€…(incl. VAT)
Hello
I would recommend that you wait for the first reviews of the new graphics cards. If problems occur, these are safely addressed in the reports.
To your question whether the graphics card changes from PCIe 5.0 to 4.0 when there are problems: Yes, that should usually work.
The so-called LTSSM mechanism is specifically responsible for testing the stability of the connection. If disturbances are detected, the speed is automatically reduced to a more stable standard such as PCIe 4.0.
Gruss