Dell PERC H310 - DP/N differences?


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Are there any differences at all between Dell PERC H310 SAS controllers with Dell part numbers R1DNH, HV52W, and 3P0R3 (as shown on the sticker with the data matrix 2D barcode)?

 

I grabbed the first H310 I found on craigslist locally, flashed it to P20 and it works fine. I'd like to get another H310 or two, and now I notice there seem to be several P/Ns given on eBay listings. My card's an R1DNH, but I see that HV52W and 3P0R3 also seem to be available. Anybody know what the differences are? (Model year? Manufacturing facility? Some secondary hardware spec, like cache size?)

 

Given the choice, should I be aiming for a particular part number, or does it not matter in the slightest (especially after crossflashing)? 

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