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PowerMac 604e CPU Upgrade Buyer's Guide
(Originally Published in 1997)
  G3/G4 CPU Upgrades   604 CPU Cards  |  Cache Dimms  |  Email Us  |  To Main Site  
The Most Detailed Summary on the Net!
Update: This page lists 604E CPU Upgrades only For articles and reviews of most every popular more recent (G3 and G4) CPU upgrades see my CPU upgrades page!

Also check my 2,700 (as of 11/99) and growing Rate Your CPU Upgrade Database (searchable by Mac model)

For questions on CPU upgrades, RAM, Troubleshooting, SCSI, IDE, Apple systems, USB, Operating Systems and much more - see my Frequently Asked Questions

This page contains the largest number of detailed CPU Upgrades reviews, Video card Reviews, SCSI/IDE/Hard Drive/RAID reviews and L2 Cache upgrade reviews on the Net (to my knowledge). This page summarizes the (now obsolete) 604E CPU Cards reviewed in 1997.

For more recent G3 and faster CPU Upgrades see the CPU Upgrades page.

The CPU card summary/guide is listed in a table below. For best results you'll need a 800x600 display mode due to the table width (sorry about that). We also have available a page showing user's feedback regarding their experiences with these products.

All tests were run with a Apple PowerMac 8500 (originally 120mhz), and a link to the full review page(s) are listed in the table for each card and speed. In many cases we've tested several versions (CPU speeds) of each model, and links are provided to each review. Below each vendor's card summary is a comments area where we share our experiences with the product. I hope you find this information useful, and appreciate any comments you may have. This page will be updated as new products are reviewed.

For the most detailed (non-fluff) page on the Net related to Mac L2 Cache Dimms, see our Cache Crop page. (Note - DO NOT buy L2 cache dimms if you're getting a G3 or G4 CPU card upgrade - it's not needed with those, only with 60x CPUs).

Leery of upgrading/removing your cache dimm? See our step-by-step Tutorial.

These upgrades fit the 75/7600, 85/8600, 95/9600 Apple machines, and the Power Computing PowerCurve, PowerCenter (not sure about PowerCenter Pro), and PowerTower Pro as well as the Umax processor card equipped machines. If in doubt, contact the Card vendor for compatability with your system.

For upgrade info on older Mac's (61/71/8100,Performas, etc) - search my CPU Upgrade Owner Reports Database - it's searchable by Mac model from nubus macs to the latest Apple systems.

Remember that prices change more often than I can track so check with dealers like Bottom Line, Other World Computing and MacGurus for the latest pricing.

NOTE: This page was orginally published in 1997 - of course these models are usually not available now (1999) and prices reflected the date of original posting/review.
There are far faster CPU Upgrades available now than this 1997 summary displays.

See the CPU Upgrades page for a huge list
of reviews of the latest CPU upgrades and much more.

PCI PowerMac 604E CPU Upgrade Card Summary/Buyer's Guide
PowerLogix  |  Newer Technologies  |  XLR8

Card CPU Type Features Pros Cons Max Speed
Obtained
Review Link
PowerLogix
PowerBoost Pro
233mhz 604E
Tested
(166 to
233mhz avail)
Remote Speed Control,
40-70mhz bus speed
adjustments in 0.3mhz
increments.
Best of Class.
Fastest 604E ever,
ran 55mhz bus speed
with stock cache.
Remote control makes
tuning a breeze.
180, 200 & 225mhz
models are excellent
values as well.
None
55mhz bus
263mhz CPU
233mhz Review

200mhz Review
Comments:
Without a doubt the class act of the currently shipping 604E cards, the PowerLogix PowerBoost Pro with its unique remote speed control makes finding the peak performance setting of your Mac a breeze. For only $30 more than the fixed speed PowerBoost card it's a great value. This card has by far the widest range of adjustments (speed settings) of any card to date, allowing you to squeeze every bit of performance out of your PowerMac. However if you're not comfortable with doing that, just set it to one of the "standard" settings listed in the manual - it's your choice. Truly a "no-compromise" accelerator card. Our review card was the 233mhz version - which easily posted the fastest scores we've seen anywhere on a 604E based system to date, running reliably at a 263mhz CPU speed. 3 year Warranty.
Update: 8/21/97 - a review of the 200mhz Pro is posted.
 

Card CPU Type Features Pros Cons Max Speed
Obtained
Review Link
PowerLogix
PowerBoost 604E
233mhz 604E
Tested
(166 to
233mhz avail)
Fixed bus/CPU speed
48mhz bus, 240mhz CPU
For those that
do not care to
adjust speeds, this
card provides simple
plug & play and
excellent performance.
Fixed bus speed.
(N/A) Std Review
Ultra Review
Comments:
This card is identical to the PowerBoost Pro, but without the remote control. If you do not feel comfortable adjusting speeds and just want a plug and play card with top notch performance then this may be your card. Scores exceeded the PowerTower Pro 250 in our 8500 system with 1meg cache. A review of the standard PowerBoost is here, and the special order "Ultra" version review is here. The Ultra version runs at 250mhz with a 50mhz bus speed, differing from the standard version's cpu speed of 240mhz with a 48mhz bus speed. Why 240mhz? - the 48mhz oscillator is more readily available. 3 year Warranty.
 

Card CPU Type Features Pros Cons Max Speed
Obtained
Review Link
Newer Technology's
MaxPowr 225
225mhz 604E
Tested
(180mhz to 225mhz avail)
4 Speed settings
(45/225,52.5/210,
56.25/225,60/240)
Easy adjustments
Proven reliability. Speed Doubler2/Ram Doubler2 Included.
Limited speed
options may
result in running
CPU well below
rated speed.
52.5mhz bus
210mhz CPU
(Some users report
56.25/225 settings
work in some Macs)
Full Review
Comments:
Newer Technology is one of the most respected names in the Mac Accelerator market, and this card shows why. Rock solid reliability and good performance are hallmarks of Newer Designs (well - except the MP cards we've seen). Other than the limited speed selections there is nothing to complain about with this card, and the Speed Doubler2/Ram Doubler2 bundle is a nice bonus. At the time we tested this card we did not have the PowerLogix 1 meg caches, and we wonder now if the card may have ran at the better 56.25mhz bus/225mhz cpu speed with the PowerLogix cache. With the 1 meg IDT cache, we were forced to choose between two settings - either 45mhz bus/225mhz cpu or 52.5mhz bus/210mhz cpu (below the rated cpu speed). These two settings are each a compromise, as you're choosing either bus speed or cpu speed. The MacBench scores in the detailed review show the tradeoffs. Again, with the PowerLogix cache the Newer 225 may have ran at 56.25/225 which would have boosted scores significantly. Overall a fine product with a proven track record. 2 year Warranty.
 

Card CPU Type Features Pros Cons Max Speed
Obtained
Review Link
XLR8 MACh Speed 604E 180mhz
to 233mhz
(All tested)
Large number of speed settings (2nd only to PowerLogix) Least expensive (usually) in its speed range. Wide range of bus speeds. Cache sensitive
Usually limited to under 50mhz bus speeds. Requires removing card to adjust speeds.
45mhz bus
180mhz CPU
(180mhz card)
49mhz bus
245mhz CPU
(233mhz card)
180mhz Review
225mhz Review
233mhz Review
Comments:
In a way XLR8 made this site possible by their low pricing on the their initial product, the XLR8-180mhz card. At that time this site was just an idea, and spending approx. $800 for a competing card was out of the question. I bought the card from MacZone for $579.99 - hundreds less than any other card at the time. XLR8's pricing seemed to start a price war that continues even today. With that said, the XLR8 cards have proven to be much more cache sensitive in our 8500 than products from Newer and PowerLogix. However we have not had any reliability problems, and performance even at the lower bus speeds has been good. The reviews of the 233mhz, 225mhz and 180mhz cards bear this out. As a note - the PowerLogix 1 meg cache (see the Cache Crop page) has proven to work with the XLR8 cards which can boost performance significantly. The XLR8-180 is also the lowest priced 180mhz 604E card at this time as well. 2 year warranty.
 


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