Uses Dell power supply that resembles EPS12v not ATX. Not sure about the 8 pin connector for the CPU. Also if you ever want optical drive order with that. Not easy or possible to modify face-plate for the non optical drive model. Its not a simple yes or no answer. [NAME]-Chris M  would have more information. If standard EPS 12v fits then yes its standard. Has up to 1000W power supply option but I dont know about the VRM heatsink and CPU heatsink for 125W CPU. VRM Heatsink 0N1C1D N1C1D   ?????? CPU COOLER with heatpipes for 125W CPU. Also the Top and Front fans fans are optional 120mm HDD fans have teeny tiny connector no idea what part number is or mounting brackets for ANY of the fans. CPUR56MP Intel i9-10900KF Comet Lake-S, 3.70GHz, 20MB, 125w, 10 core3PH75 Intel i9-10900K Comet Lake-S, 3.70GHz, 20MB, 125w, 10 core48X0T Intel i9-10900F Comet Lake-S, 2.80GHz, 20MB, 65w, 10 core35G7Y Intel i9-10900 Comet Lake-S, 2.80GHz, 20MB, 65w, 10 core NJV41 Intel i7-10700KF Comet Lake-S, 3.80GHz, 16MB, 125w, 8 core C2T71 Intel i7-10700K Comet Lake-S, 3.80GHz, 16MB, 125w, 8 core JCPGM Intel i7-10700F Comet Lake-S, 2.90GHz, 16MB, 65w, 8 coreDX5NG Intel i7-10700 Comet Lake-S, 2.90GHz, 16MB, 65w, 8 coreFGJ4W Intel i5-10600KF Comet Lake-S, 4.10GHz, 12MB, 125w, 6 coreR1PRN Intel i5-10600K Comet Lake-S, 4.10GHz, 12MB, 125w, 6 core2D8P4 Intel i5-10400F Comet Lake-S, 2.90GHz, 12MB, 65w, 6 core25PHV Intel i5-10400 Comet Lake-S, 2.90GHz, 12MB, 65w, 6 coreCT26X Intel i3-10100 Comet Lake-S, 3.60GHz, 8MB, 65w, 4 core PSU  No idea what part numbers are300w    ???????500w1000w  RamFour UDIMM slotsMaximum 128GB2666 MHz, i3/i5 CPU2933 MHz, i7/i9 CPU128GB = 4x32GB64GB = 2x32GB, 4x16GB32GB = 1x32GB, 2x16GB16GB = 1x16GB, 2x8GB8GB = 1x8GB, 2x4GB To be clear from a Dell warranty and policy perspective, a user should not expect our OEM BIOS and OEM tested/validated memory sticks to work without issues using non-tested/non-validated retail memory sticks.Dell models are often shipped with 3200MHz memory. However, with Intel Core i3/i5 processors, it is limited to 2666MHz. With Intel Core i7/i9 processors, it is limited to 2933MHz. 732YD 32GB DDR4, 3200MHz, 2Rx8, Unbuffered, 288 pin, Dual Rank, 1.2V, Non-ECC, Non-Encrypted, Hynix HMAA4GU6AJR8N-XN/HMAA4GU6CJR8N-XN, Micron MTA16ATF4G64AZ-3G2B1/MTA16ATF4G64AZ-3G2E1, Samsung M378A4G43AB2-CWEC5N22 16GB DDR4, 3200MHz, 2Gx64, 2RX8, Unbuffered, 288 pin, Dual Rank, 1.2V, Non-ECC, Non-Encrypted, Adata AO2P32NCST2-BZ7SHD, Hynix HMA82GU6DJR8N-XN, Kingston KC5N22-HYD/KC5N22-MIE, Micron MTA16ATF2G64AZ-3G2J1, Samsung M378A2K43EB1-CWEV0M5R 8GB DDR4, 3200MHz, 1Gx64, 1RX8, Unbuffered, 288 pin, Single Rank, 1.2V, Non-ECC, Non-Encrypted, Adata AO2P32NC8T1-BZ5SHD, Hynix HMA81GU6CJR8N-XN/HMA81GU6DJR8N-XN, Kingston KV0M5R-HYD/KV0M5R-MIE, Micron MTA8ATF1G64AZ-3G2J1, Samsung M378A1K43EB2-CWE36FTX 4GB DDR4, 3200MHz, 512x64, 1RX16, Unbuffered, 288 pin, Single Rank, 1.2V, Non-ECC, Non-Encrypted, Adata AO2P32NC4U1-BZNSHD, Hynix HMA851U6DJR6N-XN, Kingston K36FTX-MIE, Micron MTA4ATF51264AZ-3G2J1, Samsung M378A5244CB0-CWE Video cardsGPCKW MSI GeForce RTX 2070 Super, 8GB, Three DP 1.4/HDMI 2.0bG7CH1 MSI GeForce RTX 2060 Super, 8GB, DP 1.4/HDMI 2.0b/DVI-DDHRKF MSI GeForce RTX 2060, 6GB, DP 1.4/HDMI 2.0b/DVI-DKPNXF MSI GeForce GTX 1660 Ti, 6GB, DP 1.4/HDMI 2.0b/DVI-D7MKYT MSI GeForce GTX 1660 Super, 6GB, DP 1.4/HDMI 2.0b/DVI-D4WY5P ECS GeForce GTX 1650 Super, 4GB, DP 1.4/HDMI 2.0b/DVI-D7HNWN ECS GeForce GT 1030, 2GB, HDMI 2.0/DVI-D4FCCX ECS RX 5700 XT, 8GB, Three DP 1.4/HDMI 2.0b38MPY ECS RX 5700, 8GB, Three DP 1.4/HDMI 2.0bNH5PX MSI RX 5600 XT, 6GB, Three DP 1.4/HDMI 2.05V7N7 MSI RX 5300, 3GB, Two DP 1.4/HDMI 2.0bOnboard Intel UHD 630, Two DP 1.4/HDMI 2.0    
Current setup for the CPU is Core i5-10500 with integrated graphics and 460-watt power supply. Can the CPU be upgraded to Core i7-10700F? And based on the service manual, the T3640 uses ATX power supply, is that correct? Also, can I use a DDR4 3200? I have two unused RAM modules.
Pre-Purchase Question: Dell Precision T3640 CPU Upgrade and Power Supply