Gateway Performance 1500 RDRAM

What's the difference between the PC800-45 and PC800-40 RDRAM? I have an older Gateway model that isn't getting any results when I use your memory finder. I'm not sure exactly what I need. It's a Gateway Performance 1500. Thanks.

The 40 / 45 refer to latency of the memory.

The Peformance 1500 uses  PC800-45 RDRAM. All of this memory is guaranteed compatible with your computer and can be returned for any reason. Please let me know if you have any other questions!
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