On 21 May 2008, at 17:53, Winterlight wrote:
and, I didn't say anything about performance gains?
Certainly, that was your implication.
Although video encoding is one of the places those extra general
purpose registers in AMD64 mode can show themselves,
that must be in bizarreo world. Every time I have run encoding tests
with AMD CPUs against Intel they perform slower by factors of three,
and four.
AMD64 is the proper name for x86-64, which is present on AMD and Intel
processors at this point. I refer to it as AMD64 mainly because it
annoys Intel fanboys :p
Yes, a Core 2 Duo has a lot more SSE/SSE2/SSE3 firepower than an
Athlon64 or Phenom, but that's a distinct and seperate issue from the
same chip in 32 or 64bit mode.
The part that'll sting a bit for you is that 3.06Ghz Netburst Xeons
will get kicked around by a 1.86Ghz Core 2 Duo, the Xeon box isn't a
clunker, but... well, Netburst always was a bit rubbish :p
I have a P4p Xeon and I am not sure it is, or isn't a Netburst ,as
it was purchased after Intel dropped Netburst. However, I don't buy
your analysis anyway. Every encoding test I have done, over the last
four years, blows away anything AMD has put out. I have never seen
any legitimate source claim that AMD could stand up to Intel when it
comes to video editing and encoding.
uh, Since when are Core 2 Duo's AMD products?
And here's a benchmark (thg I know, but... well)
http://www.tomshardware.com/charts/cpu-charts-2007/mainconcept-h-264-encoder,380.html?p=1306%2C1262%2C1261%2C1250%2C1245%2C1241%2C1302%2C1239%2C1236%2C1235%2C1232%2C1231%2C1304%2C1303%2C1229%2C1298%2C1227%2C1291%2C1222%2C1280%2C1318%2C1219%2C1277%2C1314%2C1218%2C1284
MPEG2 to H264 transcode with Mainconcept
1.86Ghz Core 2 Duo E6300 - 151 seconds
3.6Ghz Pentium D 960 - 156
Both dual cores, and the C2D is near as damnit twice the IPC of the
Netburst part
Put a 3.2Ghz Xeon based off the C2D architecture up against a P4, and
the P4 will just curl up and die of embarrassment.
Oh, and yeah, any P4 based anything is a Netburst part, and to have a
3.06Ghz clock it'd HAVE to be, as Intel haven't sold Woodcrest/
Clovertown/Harpertown at a 3.06Ghz clock
one thing to watch out for is HDCP support btw, being able to play
blu- ray stuff at full res is.. well, at least some of the point :)
First, I will be working with cable HD. And trying to predict what
DRM laden Blu Ray is going to do in the future is a fools errand.
Well, HDCP is the standard copy protection, so that's not really a
prediction, more buying hardware that fits the standards, fair enough
if it's just going to be handling data from a cable box though.
-JB
