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HDD spindle rpm vs cache size: which rules?

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February 26, 2011 8:58:39 PM

Hi Folks,

Want to replace primary boot HDD in XP-Pro Lenovo W500 laptop (maybe W7-Pro later). Can't decide b/t 2 Western Digital 500GBs:

1) WD5000BEKT: 7200rpm, 16MB cache, 5yr warranty
2) WD5000BUDT: 5400rpm, 32MB cache, 3yr warranty

Std use: FFox, M$ Office, Adobe CS5, etc. Which would you choose & why? BTW, 'BUDT' is an 'advanced format' HDD. TIA for your time & help.
February 26, 2011 10:27:21 PM

I would go for the 720RPM drive. The higher spindle speed will give you higher throughput and lower rotational latency. Plus it has a longer warranty. If you're willing to shell out more money I would recommend looking into a SSD. It has lower power consumption than both of those drives and blows them out of the water in terms of performance.
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February 26, 2011 10:32:04 PM

7200 rpm is better. Cache size is largely irrelevant.

Caan you manage a SSD? It absolutely transforms your laptop.

Assuming a SSD replacement would cost too much, consider the seagate momentus XT 500gb drive which has a 4gb nand cache which will give you ssd performance for the things you do most.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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March 1, 2011 12:11:05 AM

7200rpm clearly.
Cache size has no importance, it's strictly marketing.

If you have two bays for the hard disks, you may boot on a smaller SSD. I got a used Vertex II with 30GB capacity for 70usd last year.
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March 11, 2011 5:25:59 PM

Best answer selected by ivana89.
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