Faster: 7447a on DDR bus or 7448 on SDR bus?

#1 Sat, 20 Aug 2011 - 04:57

Hi,

I'd like to issue a challenge of sorts. Which do you think is faster, and why do you think so, for doing computationally intensive tasks, primarily compiling?

System one: 1.8 GHz 7447a in a MDD tower with 2 gigs of DDR memory

System two: 1.733 GHz 7448 in a digital audio tower with 1.5 gigs of 133 MHz SDR memory

The speed differences between the drives should not be a big factor since drive access is minimal, but I'll list that anyway.

System one: 750 gig Seagate 7200 RPM drive on the 100 MB/sec bus

System two: 2 TB Samsung 5400 RPM drive with SATA-IDE adapter on the 66 MB/sec bus

I've already run some tests and one system is a clear winner, but I'd be very interested to hear guesses and see who's right... Also, if anyone has any suggestions for a benchmark in BSD, I'd be happy to run some.

John

#2 Sat, 20 Aug 2011 - 05:33

Just checked out Wikipedia and it seems like the 7448 would be the better processor. But I'm going with DDR machine, my theory is the SDR would be a bottleneck for the processor.

I feel that I have a 60% chance of being right.

#3 Sat, 20 Aug 2011 - 07:36

There's two different MDD bus speeds, the 133 and the 167.

#4 Sun, 21 Aug 2011 - 04:29

Right; the MDD unit is the 167 MHz bus version.

#5 Sun, 21 Aug 2011 - 05:50

Definitely the MDD DDR if it is the 167 model.