The K10 which both the X3 and X4 is coming from are faster than the
X2's at the same clock. Then there is this with multiple cores. It's a
bit of a hype about quad cores right now but in general it's not
needed, very few programs can take advantage of it so the gain with
more cores is more or less none, at this date.
Then there's the B2 and B3 stepping. Every Phenom that ends with 00
is B2 stepping and they all have the so called TLB bug. This means it
needs to be patched to run without fault and that patch makes them go a
bit slower. All Phenoms that ends with 50 are B3 and they have that bug
fixed and doesn't need the patch, hence they can run on full speed.
The 8450 is at a higher clock then the 9100 as well so each core
runs faster on it. Since very very few programs will be able to use
that fourth core on the 9100 there is no gain at all, those extra MHz
on the 8450 and the fact that it doesn't have the TLB bug makes it in
99% of the cases faster than the 9100. Compared to the 4800 it will
faster as well and you can probably overclock that X3 so it completely
trashes the old X2.
ref: http://forums.amd.com/forum/messageview.cfm?catid=14&threadid=103603
X2's at the same clock. Then there is this with multiple cores. It's a
bit of a hype about quad cores right now but in general it's not
needed, very few programs can take advantage of it so the gain with
more cores is more or less none, at this date.
Then there's the B2 and B3 stepping. Every Phenom that ends with 00
is B2 stepping and they all have the so called TLB bug. This means it
needs to be patched to run without fault and that patch makes them go a
bit slower. All Phenoms that ends with 50 are B3 and they have that bug
fixed and doesn't need the patch, hence they can run on full speed.
The 8450 is at a higher clock then the 9100 as well so each core
runs faster on it. Since very very few programs will be able to use
that fourth core on the 9100 there is no gain at all, those extra MHz
on the 8450 and the fact that it doesn't have the TLB bug makes it in
99% of the cases faster than the 9100. Compared to the 4800 it will
faster as well and you can probably overclock that X3 so it completely
trashes the old X2.
ref: http://forums.amd.com/forum/messageview.cfm?catid=14&threadid=103603
