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- ASRTD486.WSK is a grab-bag of results from 25 486 machines tested
- with WindSock 3.0x, with the addition of 4 results from 486s found
- in the sample .WSK files that came with WindSock 3.20.
-
-
- CPU Performance:
-
- As you would expect, the 486DX2/66s are fastest. There seems to be
- two classes of '66s: The Zeos, Maxum and NCR machines return optimal
- performance for their CPUs. There appears to be some kind of problem
- with the Contaq, HP Vectra and No-Name Clone machines, perhaps to do
- with the external cache controller. [The No-Name Clone was selected
- as representive of a number of observations].
-
- Amongst the 486/50s, the DECpc and Zenon stand out as winners. There
- seems to be only a minor difference in the CPU speeds of DX and DX2
- 50s.
-
- The Packard Bell 486SX/25 is interesting, this machine has been upgraded
- with an Overdrive/25 chip. To observe the impact of adding an Overdrive
- CPU to a 486SX, contrast the HP Vectra 486s/20s. One is standard, and the
- other has an Overdrive/20 added. Using the 'Review Results' window, you
- can see that the CPU, Video, and Disk performance of the system is greatly
- improved just by putting in a faster CPU.
-
- There are no suprises among the 486/33s and SXs, the motherboard
- manufacturers have got these CPUs under control and all the results are
- similar.
-
- A lone example of the Cyrix 486DLC is included, again selected as
- representitive of a number of No-Name Clones. The Cyrix puts in a
- respectable performance, rating slightly lower than an Intel 486DX/33
- based system. I do not know of any 'Name-Brand' systems using the Cyrix
- chip, all the examples I have are clones.
-
-
- Video Performance:
-
- The winner in this area is the Zenon 486DX/50. This test was run with
- WindSock 3.02, and I would like to see the 3.1 or 3.2 figures on this one.
-
- The Video Performanceresults are more variable, because the Video cards
- and drivers used vary a lot, but the faster machines generally do better
- at Video too. The fastest 486DX/33 is the Compaq M-Series machine which
- rates slightly better than the Gateway 2000 486/33 which has local bus
- video. The EISA bus on the Compaq is probably responsible for this (but
- the Compaq's QVISION card is very good).
-
- The advantages of Local Bus Video are shown by the differences between
- the two Gateway 486/33s - video performance is almost doubled.
-
-
- Disk Performance:
-
- The disk drives in all modern machines have very similar performance
- characteristics. The differences in disk performance are usually
- attributable to caching. The faster machines also usually have faster
- memory and system cache, and can also execute the caching software more
- effectively.
-
- The disk performance of all these machines tracks the CPU speed fairly well.
- Note the difference between the two HP Vectra SX/20s. Remember that what we
- are testing here is not the raw speed of the disk drive(s), but the total
- amount of I/O work done in a certain time interval.
-
- The winner in this area, the Zeos 486DX2/66 is using the Hyperdisk cache
- software rather than SmartDrive - an area worth exploring as Hyperdisk is
- (last time I heard) Shareware.
-
-
- Memory Performance:
-
- The DECpc 450ST returned the best memory speed we have EVER seen. This
- machine is a full 486DX/50 with a 50Mhz motherboard, and this illustrates
- why you might like to think about a full 50 rather than a DX2, which has
- a 25MHz motherboard.
-
- The Memory speed tracks motherboard speed fairly closely, except where
- the manufacturer has cut corners and implemented a sub-optimal memory
- sub-system. 66's and 33's (33Mhz MBs) Score around 220. DX2 50's and
- 25's (25Mhz MBs) score 180 - 200. The two HP Vectra SX/20s get 150.
-
- The systems below the two Vectra SX's in performance have problems.
- The designers of these motherboards probably rushed out these systems
- to cash in on '486 fever' before they had worked out an adequate
- memory sub-system. Actually, no memory chips can keep up with most of
- these systems, so to get optimal performance you need to use a memory
- controller with 4-way interleave etc. etc. - but of course it's
- cheaper if you don't!
-
-
- Overall Performance:
-
- And the winner is: The Zeos 486DX2/66. The CPU speed of this system,
- plus the Hyperdisk cache, makes it the best Windows system reviewed
- here. After looking at these results, I guess that if I was looking
- for a new system, I'd look for a '66 with a decent memory sub-system
- and lots of memory (but not too expensive - of course).
-
-
- Reviewed by: Chris Hewitt
-
-
-
-