I have an older desktop that feels very slow on Windows 10. I mainly want to use it for email, coursework, and light gaming such as Civilization III/IV and The Sims, so I do not need a high-end system. Windows 11's compatibility checker says the Core i5 processor is unsupported. The current specifications are an Intel Core i5-6400, 8 GB of RAM, a 1 TB Toshiba hard drive, and an NVIDIA GeForce GTX 1070 with 8 GB of graphics memory. The case appears to be an ASUS G11CD, although I am not completely certain. What would be the most worthwhile upgrades on a reasonable budget, and how can I make sure any replacement RAM or processor is compatible?
3 Answers
Upgrade the memory to 16 GB first, using two matching 8 GB DDR4 desktop DIMMs if possible. Check the existing stick or the ASUS system's exact model and motherboard specifications before buying, since the speed, capacity limits, and number of slots can vary between G11CD versions. Thirty-two gigabytes is unnecessary for Civ, The Sims, email, and coursework.
I would not start with a CPU upgrade. A compatible i7-6700 or i7-7700 may help in some workloads, but the exact motherboard and BIOS support must be confirmed, and a 7700 still is not officially supported for Windows 11. The i5-6400 should handle those older games, so spend the money on an SSD and possibly 16 GB of RAM first. Windows 10 performance should also be checked for background programs, startup apps, malware, and low free disk space.
The biggest improvement will come from replacing the mechanical hard drive with a 2.5-inch SATA SSD and doing a clean Windows installation or cloning Windows onto it. Even an inexpensive 500 GB or 1 TB SATA SSD should make startup and general use feel dramatically faster. Your GTX 1070 is more than enough for the games you listed.
You do not need a particularly fast or expensive SSD for this system; just make sure it is a SATA model rather than an M.2 drive unless the exact motherboard supports that type.
If you buy another 8 GB module, try to match the current stick's DDR4 type and speed. Replacing the existing memory with a matched 2x8 GB kit is often the simplest option.