Newest AMD versus Pentium M review on GamePC

Kocur

Junior Member
Oct 4, 2004
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Just two days ago Anand compared Pentium M to AMD 64 and Pentium 4 processors. You know the results. There is also another review of Pentium M on TechReport (for reference, see www.techreport.com/reviews/2005q1/dfi-855gme-mgf/).

Today, GamePC (www.gamepc.com/labs/view_content.asp?id=lpcpuso&page=1) did another comparison between AMD64 and Pentium M and the results are different from those obtained by Anand and guys on TechReport.

My question is what is going on GamePC? Who is this Chris Connolly? Why did he got different results?

Kocur.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
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Well taking a quick look at the Doom 3 benchmarks... yes, the numbers are different, but in relation to eachother, all the results seem to agree that the 2.0 GHz Dothan is about equal or slightly slower than a 2.0 GHz Athlon-64.

Few differences I notice looking at the testbeds...
GamePC used CAS 2.5 RAM, AnandTech used 2.0, and TechReport used 2.0.
GamePC used a PCI-Express 6800GT, AnandTech used a PCI-Express x800XT, TechReport used an AGP 6800GT
 

LTC8K6

Lifer
Mar 10, 2004
28,520
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Dothan is back in the game! :D

This keeps going back and forth. I think it's 2 to 2 now.

2 reviews saying Dothan is as good or better than A64 and 2 saying it's not.

 

TStep

Platinum Member
Feb 16, 2003
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What I am most interested in is the fsb scaling. If you look at the graphs, for the most part the cpu scales fairly linearly. The 2.13/133 is performing as if it was 2.2/100, not bad.

Although a great generality, essentially bumping the bus 33mhz is saving 66mhz on the cpu for similar performance. Right now the Dothan is slightly lagging behind A64 clock-for-clock, but bump the bus up to 200 and add DC on 915?? chipset, and a little interpolation would show it is very evenly matched.

P4 is performs fairly well against A64 (except gaming of course), but it would be nice to see a trouble free Intel offering on an up-to-date platform.

Edit: won't get my $$ until competatively priced, new platform, 64bit capable
 

TheStu

Moderator<br>Mobile Devices & Gadgets
Moderator
Sep 15, 2004
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Just look at the reviews... the Dothan architecture is good yes.... and yes it is competitive, is it a killer yet? No. If Intel were to adapt the Dothan architecture to the desktop fully (and I think they should drop DDR2 in that case given the lower latency) it would be a very competiteve chip and make me seriously conisder it instead of A64 for my next machine... but lets face it.. it has a ways to go. It need 64-bit capability at the very least not to mention a few other things to make it across the board competitive and the prices are nowhere near close enough to make me want it in its curent state...
 

HeaterCore

Senior member
Dec 22, 2004
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Originally posted by: LTC8K6
Dothan is back in the game! :D

This keeps going back and forth. I think it's 2 to 2 now.

2 reviews saying Dothan is as good or better than A64 and 2 saying it's not.

Clock-for-clock, yeah, but at a given price point the A64 is a much better performer, and the available feature-set and upgradeability are much better as well. If you're looking for a great-performing silent PC, then by all means spring for the Pentium M; for anything else whatsoever, look elsewhere.

-HC-
 

classy

Lifer
Oct 12, 1999
15,219
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LOL Its a shame Gamepc misleads. They ran the Athlon memory with 2.5, 3, 3 settings :roll:. Yeah OK.
 

TStep

Platinum Member
Feb 16, 2003
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AMD Athlon64 System Configuration
2 x Samsung DDR-400 (PC-3200) Memory - 1 GB Total
CAS 2.5,3,3 Latency at DDR-400 Speeds

Intel Pentium-M System Configuration
2 x Samsung DDR-400 (PC-3200) Memory - 1 GB Total
CAS 2.5,3,3 Latency at DDR-333 Speeds
(Run at 333 MHz due to motherboard/chipset limitation)

If anything the Dothan platform is running at a disadvantage. Latencies are the same for both setups, but A64@PC3200 and Dothan@PC2700.
 

classy

Lifer
Oct 12, 1999
15,219
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Originally posted by: TStep
AMD Athlon64 System Configuration
2 x Samsung DDR-400 (PC-3200) Memory - 1 GB Total
CAS 2.5,3,3 Latency at DDR-400 Speeds

Intel Pentium-M System Configuration
2 x Samsung DDR-400 (PC-3200) Memory - 1 GB Total
CAS 2.5,3,3 Latency at DDR-333 Speeds
(Run at 333 MHz due to motherboard/chipset limitation)

If anything the Dothan platform is running at a disadvantage. Latencies are the same for both setups, but A64@PC3200 and Dothan@PC2700.

Better yet why don't we compare an Athlon 64 overclocked to a Overclocked Pentium M. Just give use an old .09 3500+ or better yet a .09 $150 3000+. Lets put these chips on an overclocked bus and then compare. I don't think it will be much of a comparison since those chips reach even beyond FX 53-55 performance when overclocked on a higher bus. But it will be good for some laughs ;)
 

LTC8K6

Lifer
Mar 10, 2004
28,520
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The comparison is supposed to show what Dothan might be liek on a desktop, so Dothan is at a disadvantage since it would have a better chipset on a newer desktop board.

I have heard of 1.5 Dothans doing ~2.4 using Clockgen & the stock cooler.
 

Lord Banshee

Golden Member
Sep 8, 2004
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MSI/ASUS/ABIT need to make a motherboard with on of this sockets. AGP/PCI lock is needed.. I would like to see what this little bad boy can do..
 

TStep

Platinum Member
Feb 16, 2003
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Classy, you'll get no arguement from me as to which is --currently-- the better cpu/mobo combo, that's fairly obvious from both a clock-for-clock aspect, platform features aspect, and price/performance ratio. If you read my 1st post in this thread you'll see where I'm coming from.

As for right now, all that can be done is speculate what Intel is bringing to the table to replace P4 or as an alternative to P4, not sure what they will do. The current 855 platform doesn't some of the benefits the new platforms do. Obviously if Intel brings Dothan to desktop, it will be on a new chipset w/ DC memory, 200 or higher fsb cpus and mobos, PCI locks, etc. With that follows all the performance and bandwith benefits that A64 has now.

Paraphrasing LTC8K6, given the archaic platform that is being used for testing, the results show some promise. Also as mentioned in several of the Dothan reviews was that the massive L2 will cover up the low memory bandwith. This inversly implies that a higher bandwith platform would do little for increasing performance. As pointed out in my first post, there is considerable benefit from fsb scaling which in turn points to better performance once the platform is upgraded than we are seeing in the reviews.

As far as ultimate frequency scaling, that is an unaswered question. It looks like it's got to scale clock-for clock and $-for-$ with A64 to be sucessful. A few reviews have had them at 2.4-2.5. Nobody is going to see how high these puppies can get until the boards get some PCI locks.

Finally, I couldn't give a rat's a$$ who's label is on my cpu. I have no emotional attachment to hardware, so if your looking for a fanboy response, look elsewhere. If there was no competion, we'd all be on slower machines and paying more for the pleasure.;)