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AMD Socket-AM2: Same Performance, Faster Memory, Lower Power
AMD Socket-AM2: Same Performance, Faster Memory, Lower Power
Date: May 23rd, 2006
Topic: CPU & Chipset
Manufacturer: AMD
Author: Anand Lal Shimpi
 
 

Final Words

And there you have it, quite possibly the most unimpressive launch from AMD (from a performance perspective), but given what we had already seen prior to today there shouldn't be any surprises. The introduction of the Athlon 64 FX-62 means that there is an even faster alternative for those looking to spend as much as possible on a desktop or workstation CPU, but the new 5000+ isn't really all that appealing, especially if you're a gamer.

Socket-AM2 is unfortunately not about performance, and much about bringing a unified memory platform not only to AMD but to the industry as a whole. With all desktop AMD CPUs sharing a single socket end users and OEMs alike will have a much easier job when building AMD systems. On a much more macro scale, with both AMD and Intel using DDR2 memory prices should be driven down even further and switching between platforms will no longer require throwing away your entire memory investment.

The big story with Socket-AM2 is really the introduction of the new Energy Efficient and Energy Efficient Small Form Factor CPUs, but unfortunately those are not yet available. Instead, today's launch ends up being much more about the chipsets being used on AM2 motherboards rather than the CPUs. Later today we will be looking at NVIDIA's nForce 500 series and how the evolution of the most popular AMD chipset has taken to the Socket-AM2 platform.

It is ironic and equally unfortunate for AMD that on the eve of Intel finally getting its act together, that the Socket-AM2 launch is so devoid of any sort of performance improvements. It's clear that AMD's architecture just simply isn't starved of memory bandwidth at this point, and it will take either higher clock speeds or architectural improvements to make the move to DDR2 necessary. We are happy with the fact that AMD at least kept memory latency down while moving to DDR2, but at this point there's simply no use for the bandwidth.

In the coming months we will see the official launch of Intel's Core 2 Duo processors, based on the Conroe core. Only time will tell how availability will affect pricing of those CPUs, but Intel is quite eager to release them. AMD is also awaiting the launch of Core 2 Duo, though for different reasons; in fact one of its stipulations for sending out Socket-AM2 review kits was that the CPUs not be compared to Conroe. We understood and agreed with AMD's stance on the issue, simply because Core 2 Duo (Conroe) isn't shipping yet while AM2 is, but we do get a sense of concern whenever Conroe is brought up around AMD.

AMD does have one last trick up its sleeve before the end of the year, and you will hear about it in June. It's not K8L and it's not going to affect the majority of people, but it is an interesting stop gap solution for the high end in 2006...

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80 Comments - Last by MadAd, 1352 days ago
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Not much of performance gain by absolsp, 1358 days ago
As suspected, not much of performance gain. Happy with my existing AMD setup.

Reply
RE: Not much of performance gain by Puddyglum, 1358 days ago
Do these results really warrant a change of architecture? I wonder if there is some bottleneck keeping the performance stuck where it was with the 939's.

Reply
RE: Not much of performance gain by xFlankerx, 1358 days ago
Athlon 64s simply don't need the additional bandwidth provided by DDR2. They aren't as starved for it as Pentium 4s.

Reply
RE: Not much of performance gain by Questar, 1358 days ago
It's not an architecture change.

It's a new socket to support DDR2 memory, that's it.

Reply
RE: Not much of performance gain by Locutus465, 1357 days ago
After reading reviews of the new chipset offerings from nVidia and ATI, personally I'm glad I'm running an nForce 4 s393 board. Seems to me the new AM2 chipsets and boards are going to need some maturing before they get good. The new solutions were *not* deffinitivly better than what is out there for s939. In fact, nVidia's offering in my opinion was particularly lack luster in terms of actual performance (compared to the older nForce 4 platform).

Reply
RE: Not much of performance gain by tony215, 1357 days ago
likewise, I will be sticking with my 939 venice set-up until conroe is released. Even then, I will wait for some more independent conroe test/reviews before going with Intel.

Reply
Same old. by xFlankerx, 1358 days ago
Indeed, same results as expected. Maybe this will make the AMD fanboys shut up about "waiting to see what the final results are." NOTE: I have a AMD system, I'm simply addressing those that refuse to accept Conroe's superiority.

Although...I must say that this "stop gap" solution by AMD has piqued my curiosity.

But I believe that these say it perfectly;

"One of its stipulations for sending out Socket-AM2 review kits was that the CPUs not be compared to Conroe."

"We do get a sense of concern whenever Conroe is brought up around AMD."

"So when Intel first started talking about its new Core architecture, we turned to AMD for a response that it surely must have had in the works for years, but as you all know we came up empty handed."

Those just say it all for me. Seems like AMD's in trouble. From what I've been reading, K8L doesn't bring in architectural changes either. Sure you get Quad Cores, L3 cache, FB-DIMM support, DDR3, and faster HyperTransport, but if AMD doesn't improve on it's performance-per-clock efficiency, then Intel's Quad Cores (due almost 9 months before AMD's) are going to rule supreme yet again.

Reply
O rly by Griswold, 1358 days ago
quote:

Those just say it all for me. Seems like AMD's in trouble. From what I've been reading, K8L doesn't bring in architectural changes either.


Maybe read up on it first.

Memory mirroring, data poisoning, HT retry protocol support, doubled prefetch size (32byte instead of 16), 2x 128bit SSE units (instead of 2x 64bit), out of order load execution, Indirect branch predictors and a handful new instructions sure sounds like a few architectural changes and not just a simple revision stepping.

Reply
RE: O rly by rADo2, 1358 days ago
K8L is just a marketing, nothing else. Have you seen K8L CPU? No? AMD is about 2x slower than upcomming Conroe, so they have to spread some fud, to keep their fanboys happy...

This is the magical performance I am speaking about, AMD cannot come even close:

Intel Conroe @ 3.9GHz: SuperPI 1M - 12.984s
http://www.xtremesystems.org/forums/...ad.php?t=99980

AMD FX-57 @ 4.2GHz: SuperPI 1M - 21.992s
http://www.xtremesystems.org/forums/...d.php?t=100101

I own X2 4400+ myself (it was a good choice in 6/2005), but within last few months AMD is a very bad choice, as for the price of quite obsolete singelcore AMD you can buy dualcore Intel D930 @ 65nm, and later Conroe. I think only AMD fanboys are buying AMD now, AMD has the worst price/value ratio, and Conroe will only make this gap wider.

Reply
RE: O rly by Griswold, 1358 days ago
Blablabla...

Reply
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