<p>Granted nearly all of my amd systems are Opterons and not their consumer CPU stuff. The diff between opteron and xeon was quite large until about 2 years ago when Intel put memory control in the CPU like the Opterons.<br>
Opteron still wins in flops per watt. Dual core in the same power envelope as the same speed single core. Then again with the quads. Not sure on the 6's yet. I think there is a bit of a power bump there.<br>
Intel's power is nowhere near as flat across GHz-cores. Each core adds a bit more power draw.</p>
<p><blockquote type="cite">On Mar 17, 2010 11:15 PM, "Michael B. Trausch" <<a href="mailto:mike@trausch.us">mike@trausch.us</a>> wrote:<br><br><p><font color="#500050">On 03/17/2010 01:11 PM, Jim Kinney wrote:<br>
> Up until the most recent Intel CPU's (i5, i7, etc) AMD c...</font></p>They go back and forth over time; one family will do better than the<br>
other in one thing, and then the other will catch up on that and surpass<br>
in something else. I honestly stopped caring about the split hairs WRT<br>
CPU performance a long time ago. If the CPU supports the instructions<br>
that the software I am running uses, and if the CPU has 2 or more cores,<br>
and the CPU is something that I can afford, then it's good.<br>
<br>
That said, I've long been a fan of the AMD CPUs. They have always had a<br>
price advantage. My first AMD CPU was an "overdrive" chip; a "5x86"<br>
that went into a 486 motherboard's OverDrive socket. I used that thing<br>
for a long time. I remember looking at OverDrive chips and then I found<br>
the 5x86, which was significantly less expensive and was a 100 MHz chip<br>
instead of the 66 MHz chips that I was looking at. I never was able to<br>
do a comparison with an Intel OverDrive, but I know this: that system<br>
kicked a lot more ass after adding that then it did before it.<br>
<br>
Of course, AMD back then was worse generally at floating point ops, and<br>
there was all the discussion of "real computers use Intel chips", but<br>
honestly, I don't care. I like to keep giving AMD money because I like<br>
their stuff and for what their processors cost, I can often buy two of<br>
their CPUs compared to a single Intel CPU. Regardless of which one does<br>
slightly worse in a given benchmark category, two AMD CPUs will always<br>
provide more processing power than a single Intel CPU.<br>
<br>
(Of course, it's been a long time since I've even considered having two<br>
full CPUs on a motherboard.)<br>
<br>
--- Mike<br>
<font color="#888888"><br>
--<br>
Michael B. Trausch ☎ (404) 492-6475<br>
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