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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!usc!sdd.hp.com!ux1.cso.uiuc.edu!news.iastate.edu!pv7426.vincent.iastate.edu!palane
- From: palane@iastate.edu (Paul A. Lane)
- Subject: SRAM cache vs cache
- Message-ID: <palane.726703117@pv7426.vincent.iastate.edu>
- Summary: Regarding the PC Magazine reiews
- Keywords: cache SRAM memory PC
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- Date: Sun, 10 Jan 1993 21:58:37 GMT
- Lines: 23
-
- With the various discussion about the PC Magazine reviews, I looked a
- bit more closely at the company/product profiles. Specifically, I was
- looking for differences between the Tri-Star and Gateway machines which
- might cause a difference in performance. [An aside here. The Gateway
- 2000 uses a Western Digital hard drive while Tri-Star use a Maxtor.
- This might explain part of the difference.]
-
- When examining the cache, I noted that the Tri-Star has a 256K cache,
- while the Gateway uses a 64K SRAM cache. When I started looking at
- other vendors, I noticed that many had a cache of a given size while
- others used an SRAM cache.
-
- I'm a bit curious. I know that the primary requirement for a memory cache
- is that its rated speed must be less than the recipricol of the clock
- speed (e.g., 25MHz needs 40ns memory,). I wasn't aware that any kind of
- memory except for static RAM (SRAM) was capable of this kind of performance.
-
- So, here's the question. Is there any differene between a cache using SRAM
- or one which doesn't (assuming identical size and design otherwise)?
-
- Paul Lane
-
-
-