-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
-
×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
- HP Community
- Desktops
- Business PCs, Workstations and Point of Sale Systems
- WHAT is this SR0LC

Create an account on the HP Community to personalize your profile and ask a question
01-09-2024 11:37 AM
OK high you all, I've been looking at upgrading my Z420's CPU from the E5 1603 v1 to a Intel Xeon E5-1620 v1 3.6GHz Quad-Core SR0LC CPU Processor My question today is what are these for I've seen at least 3 or 4 variations.. Do they matter when im picking a new CPU? Again This is about these on the CPU ??? SR0LC ???
01-09-2024 12:47 PM - edited 01-09-2024 12:53 PM
Jim,
Try to keep all your questions for the same basic project in the same thread. Just respond to yourself or to another member's answer at the bottom of the thread as it grows.
Let's assume you're sticking with your current v1 motherboard. There are a bunch of processors HP certified for that, found in the earlier HP QuickSpec documents. Those are all much less expensive than they used to be, recycled via eBay. You can find the specifications code for each on Intel easily. The one you mention is SR0LC, about 6.00 USD on eBay today. That code is laser etched on the top of the stainless steel heat spreader cover atop the processor. Most processors only have one of those codes, but some have two (which means Intel had two "steppings" of them. You'd always want the latest stepping, shown in the pic below. So you'd search for that C2 stepping's code rather than the C1 stepping's code on eBay. It is very rare to have 3 official for-sale-from-Intel ones. There are some odd ones that start with Q that are never to be bought. Those were "qualification" samples and virtually always will be rejected by your BIOS. You don't want one of those.
If you want a faster v1 Z420 I'd recommend you look at the E5-1660 processor, officially approved by HP for your current motherboard. That processor has two Intel spec codes, as shown below. You'd want the more recent C2 stepping and that would go for about 25.00 USD currently on eBay if you offered that. The Intel new price was $1080.00 USD. If you're going to do this project spend that small amount of money for a real true benefit. The one you mentioned would give you a small benefit but the E5-1660 would give you a significant benefit. A motherboard transplant to a Z420 v2 with a E5-1660 v2 gets you even more, and a Z440 with a E5-1660 v4 would get you quite a big boost. A good number of us use cpubenchmark.net to see relative performance results, shown below for perspective:
E5-1603 = 3452 (your current processor)
E5-1620 = 5856 (the SR0LC one you're asking about)
E5-1660 = 8403 (recommended instead for your current motherboard)
E5-1660 v2 = 10278 (if you upgraded to a Z420 v2 motherboard)
E5-1660 v4 = 13574 (if you upgraded to a Z440 motherboard)