The PC fails to start after overclocking the APU while using a separate discrete GPU.
The PC fails to start after overclocking the APU while using a separate discrete GPU.
Hello!
I recently purchased a Gigabyte RX 460 2G Windforce edition, installed it in my APU-based system, and turned it on. I was eager to begin gaming, but it wouldn’t POST—just a blank screen with no beep from the motherboard. After resetting the CMOS, it booted up correctly, though I lost my APU overclocks. I re-applied the overclocks in hopes of success, but it still didn’t work. This issue only occurs when I try overclocking with a discrete GPU; it works fine without one. Any advice would be greatly appreciated. Thanks in advance!
I would swap that PSU before doing any overclocking or using dedicated GPUs. It might actually be the reason for the issue.
It doesn't power on or do anything?
It does turn on, the fans start up, and the hard drives spin, but it just doesn't POST. The PSU seems fine; I've already overclocked the APU before, and without the GPU installed it boots normally. However, once it's installed, applying any OC to the APU prevents POST. I set the RAM timings to default but increased the speed to 2133MHz (the maximum supported by the motherboard) from a standard 1866.
The RAM is running at its standard frequency, yet I attempted to configure it to the default 1866 and still cannot start with the GPU connected.
You're asking about your overclocking settings. You're currently using BCLK overclocking with a fixed multiplier and no voltage adjustments in the UEFI. The motherboard you have is quite restrictive, and you're feeling a bit disappointed with its capabilities.
julian23561 :
I'm trying to figure out the settings for overclocking. I'm using BCLK overclocking because the multiplier is fixed, and I haven't adjusted the voltage since there are no options in the UEFI. This motherboard is quite restrictive, and I feel a bit disappointed with it. If everything is standard, the RX 460 functions properly. However, when I enable BCLK overclocking, the RX 460 seems to stop working? It might be that the GPU isn't handling that kind of overclocking, since it also affects the PCI-e bus. On these APUs, overclocking not only impacts the CPU but also nearly all buses on the motherboard—PCI-e, memory, SATA, etc.—which can cause problems if not managed carefully. Some components, especially SATA and PCI-e, are particularly sensitive to this kind of adjustment. Based on my experience with the Gigabyte GA-F2A88XN-WIFI board and an A10-7850K, I really don't like this overclocking approach.
warmon6 :
julian23561 asked about the settings used for overclocking. They mentioned using BCLK overclocking because the multiplier is fixed, and they haven’t adjusted the voltage since there are no options in the UEFI. They noted that their MSI motherboard has limited capabilities and expressed regret for purchasing it. They wondered if the RX 460 would still function properly when using BCLK overclocking on a stock system. They observed that the GPU seemed to struggle with the PCI-e bus during overclocking, which could affect other components like SATA and PCIe. They shared personal experience from using a Gigabyte GA-F2A88XN-WIFI board with an A10-7850K, where overclocking without the RX 460 worked well, but it stopped when the RX 460 was added. They suggested further research into PCI-e overclocking techniques.
Yes, keep an eye on BCLK overclocking since it can raise PCI-E voltage and frequencies, potentially harming your new RX460. BCLK as mentioned will boost the PCI-e clock unnoticed. How much did you increase the BCLK? Consider lowering it if needed.