On Wed, 2006-03-29 at 09:38 -0600, Wolfe, Julian wrote: The big problem is getting the "over the top" connectors. The ones that allow both the cache and FP are especially rare. If I had a choice, get the FP. The "over the top" connectors are the same for the cache or the FP. There is another set if you want both at the same time. -- TTFN - Guy

Julian, On Wednesday 29 March 2006 07:38, Wolfe, Julian wrote: Perhaps you missed my previous comments. Here they are again. Sorry to all the folks that've already seen them... Cheers, Lyle ------------------------------------------------------------------------------- Subject: Re: Should I track down an M8268 (KK11-A)? Date: Wednesday 29 March 2006 09:04 From: Lyle Bickley <lbickley at bickleywest.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> --snip-- I've done extensive benchmarks with and without cache and found that cache can make significant performance enhancements. Here's a brief summary of my findings of cache speed enhancement: Large FORTRAN compiles and MACRO, assemblies run on average 44% faster and large LINKs run 56% faster. Integer benchmarks like HANOI run 57% faster Floating point benchmarks like single precision Whetstone run 19.4% faster Double precision benchmarks like Whetstone run 16.9% faster. BTW: I have both FP and cache in my 11/34A (11/34C ;-) BTW2: I was surprised that cache helped performance as much as it did in my 11/34 considering that I'm using fast MOS (MS11-L) memory - and the cache was designed as a "kicker" for much slower memory... -- Lyle Bickley Bickley Consulting West Inc. Mountain View, CA http://bickleywest.com "Black holes are where God is dividing by zero"