Attached are the window shots of the tests you requested. I rebooted between
each test (can I just note that this machine boots faster than ANY Mac or
Windows box I've ever used? Woohoo! ;) ).
System is a 867MHz G4 with CDRW, OEM SCSI card and 2 CL2 256MB DIMMs,
running MacOS 9.2 (obviously).
As I noted in the G4 forum, Gauge Pro's memory bandwidth output varies
wildly when I run it on this machine, especially right after launch. It
swings up and down by 70MB/sec or more. After about a minute, it settles on
a "final" figure and only fluctuates a little, although this figure can be
pretty different each time I run the program (for example, when I ran it
last night, it settled on 243.1MB/sec. This morning, it stopped almost
20MB/sec. higher!) Add my voice to the chorus of doubt that Gauge Pro is an
effective measure of the PPC7450.
GaugePro 1.1, the same version I sent Andrew, reports only about 145.5MB/sec on a Digital Audio G4/733 (rev 2.0 CPU) and shows very little change (a few MB/sec max) usually.
[NOTE: Sometimes if I ran GaugePro when another program was running, then switched back to GaugePro I saw much higher scores (from 30 to 60MB/sec higher at times) than if run from a clean boot/only app running. The "usual" scores from a clean boot were 145MB/sec - but once while the QT player was open with a movie loaded, I saw as high as 204MB/sec rates. Not exactly the sort of thing that inspires confidence in using GaugePro for comparisons. I assume the scores below were run as requested, from a clean reboot/no other apps running. Later rev 2.1 CPU owners said they did not see any real improvement in memory bandwidth based on these types of tests.]
The 7450 CPU rates in this benchmark are much lower than even my 100mhz bus speed PB G4/400 which reports 239.2MB/sec., or any G4/AGP system that used 7400/7410 CPUs. A previous report from a G4/867 owner with a 2.0 CPU sent a screenshot showing only 144MB/sec results, but GaugePro doesn't seem to be the best benchmark for these tests. See below for Stream (cross-platform benchmark) results.-Mike
Let me know if there's anything else you would like me to test! I'm happy to
The screenshots from GaugePro 1.1 below compare a prev. 2.0 rev 7450 G4/867mhz vs Andrews later rev (assumed to be 2.1 rev from the PVR reported by PPCChecker). Although they are still not that impressive compared to 500Mhz G4/7400 or 7410 CPUs with external 1/2 CPU speed L2 cache and no L3 cache, where the 867's have onchip full speed 256KB cache and 2MB DDR L3 caches running at 1/2 the CPU speed (effective DDR rate). Later 2.1 CPU owner GaugePro tests showed lower rates than Andrew's below, so this may be another case of GaugePro rates fluctuating.
[Note - one G4/867 owner sent a note that his 2.1 rev CPU still has low GaugePro rates as shown in this screenshot. Later more 2.1 7450 CPU owners sent similar (low) results, so the above image may just be another case where GaugePro just creeps up or has a lot of varation in some cases.]
As shown since the first G4/7450s were sold, GaugePro does not properly ID the 7450's CPU type or CPU speed. (Newer Tech folded before the 7450 G4s were released so GaugePro wasn't updated.) I don't think this invalidates the memory rates shown however, since other memory benchmarks in the past have shown much lower rates with the 2.0 7450 CPUs also.
Stream Results: There's no G4 optimized version of Stream, but results from the 601 and 604 optimized versions as well as the "unroll" version are below. Results of 2.1 rev 7450 are on top, rev 2.1 7450 below. (Same g4/867 new Quicksilver systems otherwise.)
(Thanks to Danny for the rev 2.0 G4/867 Stream results.)
ThroughPut 1.5: This is Rene Trost's graphics card pure benchmark.
ThroughPut is a little application, written in PPC assembler, that tests how much data your Mac can push through the PCI or AGP port to feed your graphics card with data."
(See his website for details and download links.) There is no performance difference in this test between the two CPU revisions.
In my G4/733 Digital Audio System w/GeForce3 review I posted a graph of Throughput results (as well as real world tests) that also compared the GF3 vs Radeon, G4/733 vs G4/500 DP, etc.
CPU Revison Checking: As noted here previously, you can check the revision of your PowerPC by using our PPC Checker utility. (It has been updated to correctly ID the rev 2.1 7450 CPUs.)