ESPRIMO D588 + GPU Business PC Custom: Energy-Saving Gaming PC Driving GPUs Requiring Auxiliary Power Without an Extra PSU

You know how people always talk like it's common sense that a gaming or custom PC's power supply needs to be double the power consumption? I think that's just become a conventional wisdom through a game of telephone and misunderstandings by people lacking electrical knowledge and experience. The people saying it (the websites writing it) never provide any basis for it. Everyone is spending way too much money on power supplies for no reason. You're contributing way too much to the stores' sales.

Well, stores want to increase sales so they want to sell expensive things. Speaking of cars, the manufacturer says to change the oil every year, but the dealer (whose management is separate from the manufacturer) says every six months, and auto parts stores say every three months, right? That's just because the stores want to make a profit.

Think about it carefully. Fujitsu, a major Japanese manufacturer of communications and computers, writes 250W continuous use (MAX 280W) on the power supply sticker. Japanese manufacturers build a significant margin into the design stage. They conduct acceleration tests, pass the strict screening of the quality assurance department, and finally release it to the world. Therefore, it can easily handle 250W continuous use for several years. And I have various other theories I'd like to share, but I'll add them later.

That being said,Dospara Power Supply Calculation SiteWhen calculating on the site, an Intel Core i3-8100 is 63W, two memory sticks are 14W, an SSD is 3W, and the GPU is either a GTX 1660 SUPER with auxiliary power (125W) or a GTX 1660 Ti (120W), bringing the total to 200W or 205W. Since it looks like it will easily work without an additional power supply, I will build and test a system using the final 1660 Ti (120W)—which uses less electricity and requires auxiliary power—by supplying auxiliary power from the SATA power connector.

The manufacturer is MSI. Bought at Janpara for 14,980 yen. Comes with a warranty. Yahoo Auctions has similar prices lately, so I think it's better to buy from a store with a warranty. Janpara's website is convenient because you can filter and search by your region. I got one that was 1,000 yen cheaper than others because it had a box, no manual, and some cloudiness? on the slot cover. The curved monitor I bought right before this is also MSI, so it feels familiar.

Suddenly, a problem arose. The vertical height was too big and it interfered with the memory. This was a miscalculation. As expected, a major overhaul moving the PCIe slot position up by one tier is necessary. I forced it in with just one stick of memory, but the fan interfered with the lever of the DIMM slot. For now, I avoided it by resting it on top of the memory at an angle, causing a slight distortion from the riser card to the graphics card.

For the auxiliary power, I used a connector that converts from SATA power for about 490 yen. It barely reaches. I had an HDD attached, but apparently it consumes 24W, and since I don't have a power splitter anyway, I decided not to use it. I removed the additional power supply and reattached the original DVD drive, but for the same reason as the HDD, its power is disconnected.

It booted without a hitch, and since the drivers were already installed, it was recognized instantly. Wait, it seems like the Fujitsu logo during startup now gets skipped.

The FFXIV benchmark is 10% lower than the 1660 SUPER. There's a theory that the SUPER performs better because its memory is faster—is that it, or is it just not tuned properly? Oh well, it's energy-saving so it's fine. What does a GPU clock of 1.9GHz mean? According to the wiki, it's supposed to be 1.5GHz.

I tried NVIDIA's automatic tuning.

Yep. It broke 9,000.

Monster Hunter World runs without any issues, but I can't really feel a 2x difference compared to the GTX 1050 Ti. Looking at the parameters, various things are turned on so it must look nicer even if I don't consciously notice it, and the FPS is constantly over 60, but maybe because G-SYNC kicked in, I can't really tell the difference experientially.

Just to test, I tried it on a 4K 120FPS TV (Panasonic VIERA), but the user experience didn't change.

Conclusion: GPUs don't really change things that much~ It needs to get about 4 times better—