Go with what CPU-Z reports, not BOINC.

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Intel(R) Core(TM)2 CPU
At least SSSE3 available, so SSE3 should be available too.

I'm with Raistmer, I'm surprised that CPU-Z doesn't indicate SSSE3 for a 6700 in which case the AK-V8 SSSE3x Opt App would give you a massive improvement.

F.

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I'm with Raistmer, I'm surprised that CPU-Z doesn't indicate SSSE3 for a 6700 in which case the AK-V8 SSSE3x Opt App would give you a massive improvement.

F.

Here is the cpu-z report (partial) from my 6700 CPU. I am using the AK-V8 SSSE3X on it also.

Processor(s)

Number of processors 1
Number of cores 4 per processor
Number of threads 4 per processor
Name Intel Core 2 Extreme QX6700
Code Name Kentsfield
Specification Intel(R) Core(TM)2 Quad CPU @ 2.66GHz
Package Socket 775 LGA
Family/Model/Stepping 6.F.7
Extended Family/Model 6.F
Core Stepping B3
Technology 65 nm
Core Speed 2808.6 MHz
Multiplier x Bus speed 10.0 x 280.9 MHz
Rated Bus speed 1123.4 MHz
Stock frequency 2666 MHz
Instruction sets MMX, SSE, SSE2, SSE3, SSSE3, EM64T
L1 Data cache (per processor) 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache (per processor) 4 x 32 KBytes, 8-way set associative, 64-byte line size
L2 cache (per processor) 2 x 4096 KBytes, 16-way set associative, 64-byte line size

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Boinc....Boinc....Boinc....Boinc....

My E6600 has SSSE3, so I can't imagine why your E6700 wouldn't, too.

-Dave

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I think the significant point the OP was raising was that BOINC was only referencing SSE2, not SSE3 - that was the factor that was confusing him.

It's been well discussed before: BOINC doesn't check the CPU capabilities itself, it relies on what the operating system tells it. And Windows XP goes up to SSE2, and no further.

That is to say: Windows XP safely and properly supports all SIMD levels - certainly SSE4.1, and I'm pretty sure SSE4.2 - but it only uses and reports SSE2.

It's a logical and understandable inference that, if BOINC only 'knows' about SSE2, then it would only allow science applications to the same level: in this case the inference would be wrong.

BOINC is only a manager for the science applications: we all know managers that know far less about the technicalities of the production process than the workers they manage!

That is to say: Windows XP safely and properly supports all SIMD levels - certainly SSE4.1, and I'm pretty sure SSE4.2 - but it only uses and reports SSE2.

Vista (home premium 32), too, only reports up to SSE2 on my E6600, yet it's using AK V8 SSSE3x right now...

-Dave

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That is to say: Windows XP safely and properly supports all SIMD levels - certainly SSE4.1, and I'm pretty sure SSE4.2 - but it only uses and reports SSE2.

Vista (home premium 32), too, only reports up to SSE2 on my E6600, yet it's using AK V8 SSSE3x right now...

-Dave

Vista should be able to report up to SSE3 if I'm not mistaken.

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It only reports SSE2 on my Vista Machine as well.

1/23/2009 7:33:55 PM||Processor: 2 GenuineIntel Intel(R) Core(TM)2 Duo CPU     E6550  @ 2.33GHz [x86 Family 6 Model 15 Stepping 11]
1/23/2009 7:33:55 PM||Processor features: fpu tsc pae nx sse sse2 pni mmx
1/23/2009 7:33:55 PM||OS: Microsoft Windows Vista: Home Edition, Service Pack 1, (06.00.6001.00)

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It only reports SSE2 on my Vista Machine as well.

1/23/2009 7:33:55 PM||Processor: 2 GenuineIntel Intel(R) Core(TM)2 Duo CPU     E6550  @ 2.33GHz [x86 Family 6 Model 15 Stepping 11]
1/23/2009 7:33:55 PM||Processor features: fpu tsc pae nx sse sse2 pni mmx
1/23/2009 7:33:55 PM||OS: Microsoft Windows Vista: Home Edition, Service Pack 1, (06.00.6001.00)

Prescott New Instructions = pni = SSE3.

                                                               Joe

I like what the iMac lists better.

[code]Sat Jan 24 12:54:03 2009||Processor: 2 GenuineIntel Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz [x86 Family 6 Model 15 Stepping 6]
Sat Jan 24 12:54:03 2009||Processor features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH
DS ACPI MMX FXSR SSE SSE2 SS HTT TM SSE3 MON DSCPL VMX EST TM2 SSSE3 CX16 TPR PDCM
Sat Jan 24 12:54:03 2009||OS: Darwin: 9.6.0

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Prescott New Instructions = pni = SSE3.

                                                               Joe

I did not know that, thanks!

-Dave

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