The important digit is the middle one which is the generation and x10 is oldest. Current gen is x60. The x is type with 1 being mist basic 1 CPU box and it goes up from there. Odd numbers tend to be 2u and even 1u but there are exceptions to that. The 0 on the end means Intel, a 5 would be amd.
this post was submitted on 14 Nov 2023
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Letter determines if it’s rack mounted (R) or a tower (T). First number is the model the higher that number the more higher end the model is. Second number arguably the most important is the generation or how old it is. Example being I’d take a R340 server over a R710. R340 being a lower model but newer and faster generation.. hope that helped make sense.
And 4 digit names I think are the and variants. Also , an r740 usually has 8, but can have 16 drives, in the 2.5" variety. plus boot drives. An r740xd can have 24 2.5 or 12 3.5 drives.
Then you have storage variants, think end xc. An r340 likely has 1 cpu, few drive slots. An r640 is 1u. An r740 is 2u An r930 is 2u, 4cpu (did the do 940, 950 variants?)
R740xd only comes in the 24 2.5 variant which can be sas/sata or nvme depending on the backplane. For the 3.5 variant the model becomes the R740xd2 which is 24 3.5 drives
Also the 9xx servers like the R930 you mentioned are 4U.
13th generation is 530 630 730 830 930 14th generation is 540 640 740 840 940 See the pattern. The latest is 16th generation.