Yup, exactly, in that link if you look around you will see guys with:
PhII @3.63 GHz:
x87 : 546ms
SSE : 546ms
SSE2: 811ms

and
My results Core i7 stock
X87:2090
SSE:2050
SSE2:1170

This is what to be expected as before FX AMD had disastrous SSE engines, while Intel ones shined. There should be clearly pronounced difference between x87 and SSE2 on Intel and AMD. I think real culprit is that maybe Alex forgot a compiler flag or sth - it could be that simple.

Hmm...

I just tried the Geeks3d test one and got..

-----------------------------
Instruction set: x87
Starting matrix multiplication loop...
Elapsed time: 280 ms
Bye!

-----------------------------
Instruction set: SSE
Starting matrix multiplication loop...
Elapsed time: 249 ms
Bye!

-----------------------------
Instruction set: SSE2
Starting matrix multiplication loop...
Elapsed time: 1092 ms
Bye!

So looking at this, I would have to say there is probably something going on with the sse2 compiler that is not allowing AMD systems to actually use sse2.

Edit: Although using Alex's test, the differences aren't as exaggerated..

---------- testing started ----------
testing x87

Starting matrix multiplication loop...
Elapsed time: 2667 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 2777 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 2776 ms
---------- testing finished ----------

I just ran the test at the site DariusD linked and here is my result (Phenom II x4 @ 4 GHz) :


And this is my test from earlier (Alexander's test):


Edit: no background apps, only the cmd window opened

Intel i7 X980 4.16 GHz

---------- testing started ----------testing x87Starting matrix multiplication loop...Elapsed time: 1903 mstesting sse1Starting matrix multiplication loop...Elapsed time: 1950 mstesting sse2Starting matrix multiplication loop...Elapsed time: 1794 ms---------- testing finished ----------

less background activity (Firefox)

Does anybody know if the famous "+fullproc" launch option does any good or bad to Skyboost. And btw, if it does any good at all?

i7 920 @ 3.990 GHz, hyperthreading disabled, nothing unusual running in the background:

x87
1981ms

sse1
2028ms

sse2
1888ms

Almost identical results on repeated tests.

Here you are:

---------- testing started ----------testing x87Starting matrix multiplication loop...Elapsed time: 1528 mstesting sse1Starting matrix multiplication loop...Elapsed time: 1592 mstesting sse2Starting matrix multiplication loop...Elapsed time: 1513 ms---------- testing finished ----------

Intel i7-2600k @ 4.6GHz

Here my test.

My CPu = Intel Core i5 750 @ 2.67 GHz stock speed

---------- testing started ----------
testing x87

Starting matrix multiplication loop...
Elapsed time: 3525 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 3463 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 3526 ms
---------- testing finished ----------
Press any key to continue . . .

intel i7 q720 (laptop)



---------- testing started ----------
testing x87

Starting matrix multiplication loop...
Elapsed time: 4493 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 4618 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 4383 ms

i72600 @stock
---------- testing started ----------
testing x87

Starting matrix multiplication loop...
Elapsed time: 2044 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 2122 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 3479 ms
---------- testing finished ----------

Phenom II x4 945 stock 3 ghz

i7 2600k @ 4.7 Ghz

i7 990x @ 4.17 Ghz

Athlon II x4 640 @ 3.5 GHz

---------- testing started ----------
testing x87

Starting matrix multiplication loop...
Elapsed time: 3447 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 4727 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 4727 ms
---------- testing finished ----------

Number of cores 4 (max 8)
Number of threads 8 (max 16)
Name Intel Core i7 920
Codename Bloomfield
Specification Intel® Core™ i7 CPU 920 @ 2.67GHz
Package (platform ID) Socket 1366 LGA (0x1)
CPUID 6.A.5
Extended CPUID 6.1A
Core Stepping D0
Technology 45 nm
TDP Limit 130 Watts
Core Speed 1603.6 MHz
Multiplier x FSB 12.0 x 133.6 MHz
Rated Bus speed 3207.2 MHz
Stock frequency 2666 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
-------------------------------------------------------
Northbridge Intel X58 rev. 12
Southbridge Intel 82801JR (ICH10R) rev. 00
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 6144 MBytes
Channels Triple
Memory Frequency 801.8 MHz (2:12)
CAS# latency (CL) 8.0
RAS# to CAS# delay (tRCD) 8
RAS# Precharge (tRP) 8
Cycle Time (tRAS) 24
Row Refresh Cycle Time (tRFC) 88
Command Rate (CR) 1T
Uncore Frequency 3207.2 MHz
------------------------------------------
testing x87

Starting matrix multiplication loop...
Elapsed time: 2808 ms
testing sse1

Starting matrix multiplication loop...
Elapsed time: 2870 ms
testing sse2

Starting matrix multiplication loop...
Elapsed time: 2667 ms

Intel Core i7 930 OC@ 4209.0 MHz

C:\Users\Invisible Black\Desktop\New folder (5)>echo off---------- testing started ----------testing x87Starting matrix multiplication loop...Elapsed time: 1872 mstesting sse1Starting matrix multiplication loop...Elapsed time: 1903 mstesting sse2Starting matrix multiplication loop...Elapsed time: 1763 ms---------- testing finished ----------Press any key to continue . . .

Althon II X3 435 Rana @ 2.91 ghz

---------- testing started ----------testing x87Starting matrix multiplication loop...Elapsed time: 4094 mstestingStarting matrix multiplication loop...Elapsed time: 5610 mstestingStarting matrix multiplication loop...Elapsed time: 5453 ms---------- testing finished ----------Press any key to continue . . .

Intel Core 2 Duo P8600 2.4Ghz

Intel Core2Qaud Q6600 2.4Ghz.

AMD Phenom II X4 965 BE OC@ 3.9Ghz

Intel Core 2 Quad CPU Q6600 @ 2.40GHz
---------- testing started ----------
testing x87
Starting matrix multiplication loop...
Elapsed time: 5273 ms
testing sse1
Starting matrix multiplication loop...
Elapsed time: 4181 ms
testing sse2
Starting matrix multiplication loop...
Elapsed time: 3588 ms
---------- testing finished ----------

Used Sandra to test CPU heat sensors which report 72 to 74 deg C !!! Time for a clean out or new fan.

theres a difference between x87 and x87 optimisations.


inline optimisation is ALL about math.


Nope, background tasks has very little impact on the variation

-delete

-delete-

Continued in http://www.gamesas.com/topic/1331790-skyboost-topic-5/