jeamn Posted May 6, 2022 Share Posted May 6, 2022 I recently upgraded the GPU of my 7720 and was pleasantly surprised how easily it went. I already had a P3000 GPU in the laptop and to be honest, it was perfectly fine for what I typically do with the laptop. But, well, you know how it goes.... I shopped around on ebay for MXM upgrade cards. I thought about trying one of the non-standard MXM cards but ended up settling on a $280 P4000. The card itself looks basically identical for my current p3000. It does appear to be coated with some sort of epoxy over all the surface mount components, including the VRMs. Hopefully that doesn't impact thermals (More on that later). I have done some board repairs on both GPUs and motherboards in the past. Clearly that's not an option with this card. In typical Dell Precision fashion, disassembly to get to the GPU was pretty easy and straight forward. After removing the heatsink, it was clear the thermal compound was ready to be replaced anyway, it was quite dried out. The card did not come with a heat sink x-bracket, so I had to pop that loose from the existing card and install it on the new one. It took a fair amount of pressure, both to remove it from the old GPU and to install it on the new one. After reassembly, I booted the laptop and immediately got a BSOD when I logged into windows. The error code was "VIDEO_MEMORY_MANAGMENT_INTERNAL However, it cleared up on the next reboot. I had not uninstalled drivers before swapping video cards, which is what I believed caused the BSOD. After running through some games and benchmarks, I'm pretty happy. Performance was improved about 20-25% over the P3000. I actually believe this is the Max-Q variant of a P4000. I'm happy with the performance, but it's a little less than what other people have benchmarked. Although it seems to boost a little bit higher than the stock specs, it seems to max TDP at about 60W (with a few spikes higher) rather than the spec'ed 100W of a P4000. I'm actually OK with that. During gaming and benchmarking, the card runs exceptionally cool (<60C usually, with hardly any fans running) and the laptop still has excellent battery life I am currently running the card with Optimus enabled and the thunderbolt/HDMI ports directy connected to the GPU. I typically run the laptop connected to a thunderbolt dock connected to a 32:9 1440p monitor. Using the BIOS option to directly connect external display output to the GPU was necessary to enable high refresh rates on my monitor. (That was also the case for my P3000) 1 1 Link to comment Share on other sites More sharing options...
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