rigvelaCheck RAM before upgrading
Compare DDR type, module count and total capacity with motherboard specifications. See the difference between replacing RAM and adding to existing memory.
Start checking →Two 2-module kits need four slots
The box capacity normally describes the whole kit: 32 GB (2 × 16 GB) means two modules and 32 GB total. When adding RAM, also enter the modules you will retain.
Missing some details? The checker still flags known memory amounts that exceed a limit. An “at least” value is a known minimum, not the final total.
Keep the calculation and open checks for a retailer or your upgrade plan.
What the result means
Do matching DDR, capacity and slot count guarantee operation?
No. These are only the compared specifications. DIMM/SODIMM, UDIMM/RDIMM, ECC, individual module organisation, QVL, CPU, BIOS and cooler clearance require separate checks. For laptops, use the exact model manual; soldered memory and its limits are not modelled here.
Can I add an identical kit to the old one?
Matching names and specifications do not confirm stability together. The calculator totals capacity and slots but flags combined kits for review. Where possible, choose a single kit of the required capacity validated for your system.
Why is the rated speed not guaranteed?
Profile speed depends on the CPU memory controller, BIOS, board and installed module population. This tool does not test memory or prescribe voltages or overclocking settings.
Documentation and next steps
Method checked against documentation: . No physical memory testing was performed.