whats the diff b/w this GSKILL mem?

Cisco Kid said:

Does anyone know what the difference is between these 2x1GB Gskill kits as timings appear the same, one is noted as ZX but referred to as value the other HS

http://www.newegg.com/Product/Product.asp?Item=N82E16820231034
vs
http://www.newegg.com/Product/Product.asp?Item=N82E16820231032

I am aware that the pc4000 is on at $179 as well, but I had great success with a past PC3200 ZX Gskill kit but made a mistake and sold now I am looking for a nother set but prefer to wait for a used one........

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Arca_ex said:

They have different voltage operating ranges too.

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