![]() ![]() Now regarding the bios behavior i don't know much about it, probably it is programmed in as a safe mode, maybe someone can look it up. Maybe both GPUs will be working along the LVDS laptop screen. Didn't test if i power the eGPU after bios initialization but before windows starts to load. The eGPU can supply hdmi audio as well without any issues. More testing is needed to find the RFI source. Under eGPU load my speakers will start buzzing a lot (external DAC with unbalanced outputs - if they were balanced i don't think this issue would exist), probably due to the shitty PSU being overdriven since i know for a fact the usb3.0 cable going to the riser card is shielded. I haven't done extended testing since i need a 2nd external monitor to connect to, to see how the system will handle it. Under windows environment both GPUs work normally, so if i connect the external hdmi monitor to the AMD gpu it will work from that gpu, and when on the Nvidia card vise-versa. Also there is no option in bios to select which pcie port should have priority as the primary gpu. This laptop/cpu doesn't have an internal gpu, the "internal" gpu is a dgpu, in this case the 7970m. This disables the internal LVDS connected laptop display and it is not detected over windows or works anymore. When i power on the laptop for the first time with the eGPU connected and powered it will reboot once as the bios is initialized and self-select the eGPU as the primary GPU for some reason. When i ran Furmark on the gtx970, the PSU would power off because cheapo "500w" couldn't supply enough juice PSU has to be turned on before the system is turned on for the gpu to be recognized Note that the CPU supports one v2.0 PCIe at 16x speed but the single mPCIe goes through the motherboard to the HM55 chipset which only supports 1x v1.1 PCIe speeds. Firestrike performance is limited as well (but still more than my 7970m overclocked): I ran some benchmarks and played PUBG (low on everything, vsync off, 1080p) and in-game it would only average about 50fps inside the game but start from 120fps in the plane etc.not the best game to test and didn't test more settings, but noticed there was no stuttering at all, and gpu load didn't even come close to 90% which tells me the limitation here is the pcie speed. (Note that the pci port used is hot-plug enabled but from what i understand this only affects GTX10xx series cards). Marked: PCE164P-N03 VER 006C (i think it's one the best ones around after researching around)Īfter i booted up successfully (will go into detail later), i've installed the latest nvidia drivers (398.11) on W10, and everything worked beautifully. In order to make the mini PCIe card fit without any permanent case mods i had to trim the cable for it to make it bend and also cut the length of the adapter card with some scissors. So I went on and installed everything as shown below: In the meantime i have a GTX970 from a friend to be sold on hand so i wanted to test and see how it will perform against my 7970m running x16 speeds. I bought this laptop when it came out 8 years ago for uni studies abroad (previous PC was a modded Pentium 3 LOL) and will be upgrading to a new PC when 7nm cpus finally come out. So my laptop is a modded ASUS G73JH with an AMD 7970M, 32gb ram, and a 1st gen i7-940XM (originally 5870M, 8gb ram, i7-720QM). I wanted to try using an eGPU to see what is the real world performance due to the bandwidth limitation of 1st gen PCIe. ![]()
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