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INTEL CORE 2 DUO E6750 VS E6550 FSB 1333 VS 1066 MHZ REVIEW


           

Intel Core 2 Duo E6750 vs E6550 Fsb 1333 vs 1066 Mhz review
Posted:2007-06-24 By computer news
Number of View:172475




INTEL CORE 2 DUO E6750 VS E6550

FSB 1333 VS 1066 MHZ REVIEW



By :computer news

Posted:2007-06-24






xtreview is your : Video card - cpu - memory - Hard drive - power supply unit source

Intel Core 2 Duo E6750 vs E6550 Fsb 1333 vs 1066 Mhz review



Intel prepared the release of Intel P35 chipset for their new processor with 1333mHz system Bus .According to intel Only Bearlake chipset are able to support similar system bus , but motherboard producer again proved that many P965 just as 975 chipset are also capable to handle those processor.

Today we will check the first released processor core 2 duo E6x50 or in other world : Core 2 duo E6750 .

Let us recall that this last will present for the first time the 1333Mhz system bus , ( 333Mhz quad bumped ) , in addition intel will present those processor on a completely attractive price, 186$ for Core 2 duo E6750 witch even lower than  Core 2 duo E6700 , Intel stimulate user for passage to the new system bus  .Let us check in this review  the performance boost proposed by the new system bus with Core 2 duo E6750 and Core 2 Duo E6550 .

Core 2 duo E6750

Core 2 duo E6750 , E6550 and 1333 Mhz FSB:

With New Core 2 DUO E6750 Intel introduced the new G0 stepping witch offer the new system bus 1333 Mhz and lower power consumption.

Core 2 duo E6750

 

Core 2 duo E6750

As it was prescribed in the processor box,  This last operate at 2.66 GHZ and have 1333 MHz system bus .The processor default voltage is 1.25 V and intel set 1.35v as maximum .This processor remain packed with LGA 775 socket , and it was prepared in MALAY .

Core 2 duo E6750 cpuz

According to cpuz screen shot this processor is made on 65 NM technical process as all other core 2 duo , and has as default voltage 1.184 v for a working frequency equal to 2666 Mhz . The system Bus frequency is 1333 Mhz with (333 x 4 quad bumped bus ) .Intel set the default multiplier to 8X so we have (333 x 8 = 2666 MHZ). In other world this processor has two processor working at 2666 Mhz with 4MB L2 shared cache (each core can access to the hole available L2 memory).

Let us note that Core 2 DUO E6700 (from previous processor generation) has higher multiplier (9X) but using 266 Mhz system bus So we have (266 x 9 = 2666 MHZ )

This processor support MMX, SSE,SS3,EM64T. In addition to intel Enhanced SpeedStep witch control the processor voltage and frequency for optimum performance and low power consumption.

Core 2 duo E6550 specification

Core 2 duo E6550 specification

In the other side Core 2 Duo E6550 has exactly the same future but using lower multiplier witch in this case is set to 7x.

Core 2 duo E6550

Core 2 duo E6550 cpuz

Again according to cpuz screen shot The core 2 Duo E6550 work at 2380 MHz , But let us note that our motherboard slightly overclocked the processor , instead of 333 MHz the Bios automatically set the bus frequency to 340 Mhz giving a working frequency equal to 2380 Mhz , The default of this processor should be 2330 Mhz .

But here the default vcore seem to be more correct with 1.264 V (The default according to intel is 1.25v ) , just as core 2 duo e6750.

Many motherboard on base of old chipset already overclock to 400 Mhz + , Motherboard producer have time to add support for those processor in Intel 965 and 975 motherboard , But according to intel only Bearlake based chipset support officially those new professor. We do not forget about NVIDIA chipset witch already stated That the hole series 6xx support the system bus 1333 MHz without any problem .

Next generation Nvidia chipset will even provide support to 1666 Mhz system bus . witch is not required by all processor produced in 2007 - 2008 , But this will give a nice overclocking reserve.

Now the theoretical memory bandwidth is increased from the old 8,5 GB/S using the 1066mhz system bus (Quad bumped = 266 x 4) to 10,6 GB/S using 1333 mhz system bus (Quad bumped = 333 x 4) .This remain low to max out current DDR2 800 MHz witch theoretical bandwidth in over 12GB/s but this should improve the memory performance theoretically by just over 20%.

Core 2 duo E6750 just like the E6550 model has about  220 million transistors with TDP 65 Watts.

Core 2 duo E6750 and E6550 Overclocking :

Intel Core 2 Duo E6750 - overclocking

Intel Core 2 Duo E6550 - overclocking

OCCT stable for Core 2 duo E6550



Core 2 Duo E6750 just as Core 2 Duo E6550 are very good overclockers . we was able to make an easy 3.6 GHz from the E6750 and 3534 from the E6550 , Congrats to the abit motherboard witch showed good potential for overclocking the system bus . In today review we will also test the Core 2 duo E6750 @ 3.5 GHZ , witch was an ultra stable frequency using intel Stock cooler , 3.6 GHz was also stable for test but for same reason it fail in occt test. So for us the stable limit using air cooling (boxed cooler) is 3.5 GHZ .We was able to make 3.8 GHZ From The core 2 duo E6750 with some voltage (Vcore) boost ,but temperature became high .so we just stopped there .Let us note also That For Core 2 Duo E6550 @ 3.5 GHz was also stable for test but fail in OCCT , The limit for 6 hours Prime95 and OCCT was 3360 MHZ .SO in both case we have 1 GHZ overclock , Here is The new 2.4C coming back .

 

To test the performance of those processor we used the following system :

  • Motherboard – abit IP35 pro v1.00, BIOS 1.0;
  • Processor – intel core 2 Duo e6550 (2.33 GHz, FSB of 333 MHz, 4 MB., Conroe, rev. G0) and intel core 2 Duo e6750 (2.66 GHz, FSB of 333 MHz, 4 MB., Conroe, rev. G0);
  • Memory – 2x1024 MB corsair dominator TWIN2X2048-9136C5D;
  • Video card – NVIDIA GeForce 7900 GTX 512 MB.;
  • Hard disk – seagate barracuda 7200.10, ST3320620AS, 7200 r/min, 16 MB., SATA 320 GB;
  • Cooling system – zalman CNPS9700 LED;
  • Power unit – OCZ gameXStream GXS700 (700 W).

3DMark 06 - v1.1.0 - Processor Test

highest score from E6850 : 3d2006

Intel Core 2 Duo E6750 and E6550 : 3d2006 cpu

 


Well the overclocked Core 2 Duo E6750 lead This benchmark , Core 2 duo E6750 show faster performance than its analog with 1066 Mhz system bus (Core 2 Duo E6700).The same picture for Core 2 Extreme E6850 and X6800 , But the performance deference is pretty low , going from 1333 Mhz to 1066 result in 1-2%  boost.

PCMark05 - CPU - v1.2.0

 

Intel Core 2 Duo E6750 and E6550 : pc mark cpu


Pc mark 2005 show the same picture as above , Processor with higher system bus are a bit faster (by 1-2%).The overclocked Intel core 2 Duo show some nice score here followed by Intel Core 2 Extreme E6850. The Amd Athlon 64 x2 6000+ performance is somewhere between core 2 Duo E6600 and Core 2 Duo E6700

PCMark 05 - Memory - v1.2.0

Intel Core 2 Duo E6750 and E6550 : pcmark2005 memory


Well The memory test show exactly what we expected , the higher system bus result in higher memory bandwidth , Core 2 Duo E6750 is faster than Core 2 Duo E6700 . The E6550 in sprite of its lower frequency show higher memory bandwidth than the E6600 (2.33 Ghz vs 2.4 Ghz ) ,Thanks to the higher system bus ,the overclocked Core 2 Duo E6750 is just flaying with about  17% higher performance than the stock clocked one…

Sandra Xi - SP1 - Processor Test

Intel Core 2 Duo E6750 and E6550 : Sandra cpu

Intel Core 2 Duo E6750 and E6550 : Sandra cpu

Sandra Processor test , don't show any boost from the higher system bus , all here depend on the clock frequency , deference between processor with same clock and different system bus (1066 vs 1333 Mhz) is very Tide . Core 2 Extreme E6850 Lead this test but The overclocked processor is even higher . The AMD processor show here a respectable result with performance higher than both E6700 and E6750 but lower than X6800 .

Sandra Xi - SP1 - Memory Test

Intel Core 2 Duo E6750 and E6550 : Sandra memory

Intel Core 2 Duo E6750 and E6550 : Sandra memory

The figure seen in PC mark 2005 Memory test is repeated here .AMD processor are just flaying with about 10GB/s bandwidth but intel processor still limited to their low system bus .Thanks to the hyper-transport system and to the integrated memory controller . We hope to see similar result with Next Quick-path Intel system bus and integrated memory controller ,witch should be released in mid 2008 with  next generation processor

Cinebench 9.5

Intel Core 2 Duo E6750 and E6550 : Cinebench


Cinebench Just as sandra Do not show any clean performance boost from the 1333 MHz system bus , The deference between the old and new processor with same clock and deference system bus remain in the 1-2% range . Core 2 Duo E6750 is just a bit faster than core 2 duo E6700.

Divx Video encoding

Intel Core 2 Duo E6750 and E6550 : Divx encoding


For video encoding test we used Divx codec , one of the most optimized codec for multi-core processor , the result expressed here are in second , so Lower value mean higher performance . There is some boost from the higher bus here .The 1333 Mhz allow to save 8 second (Core 2 Duo E6750 vs E6700). Let us again note that both processor have the same frequency but with different system bus . 

WinRAR & 7-Zip : Files Compression

Intel Core 2 Duo E6750 and E6550 :  WinRAR benchmark

Intel Core 2 Duo E6750 and E6550 : 7zip benchmark


Nothings new with archiving application , The performance between core 2 duo E6750 and E6700 is below 1%.The overclocked processor show here some good result .The result are expressed here in KB/s. using the build in benchmark utility in 7-zip and winrar.

Doom 3 v1.3 - 1024x768x32

Intel Core 2 Duo E6750 and E6550 :  Doom 3


We seem to be here limited by the video card performance all processor perform about the same . The poorest being the AMD 64 ad The fastest is the overclocked Core 2 Duo E6750.

Far Cry v1.4 - 1024x768x32

Intel Core 2 Duo E6750 and E6550 :  FarCry


Far Cry here Show another picture here, The higher system bus has a small impact in the gaming performance .The overclocked E6750 is here the fastest . Let us note the poor result from Previous gaming processor (AMD 64 X2 6000+) witch are even lower than 2.33 GHZ Core 2 Duo E6550.

Call Of Duty 2 - v1.3 - 1024x768x32

Intel Core 2 Duo E6750 and E6550 :  Call Of Duty 2

Again Video card limitation ,But here AMD show some nice result with performance equal to Core 2 extreme X6800 , the overclocked Core 2 Duo E6750 is a leader with 2 fps boost over the E6850 processor.

Power Consummation

Global system power consumption Temperature
AMD Athlon 64 X2 6000+

232 Watts

59c
Intel Core 2 Duo E6550

167 Watts

49c
Intel Core 2 Duo E6600

187 Watts

52c
Intel Core 2 Duo E6700

191 Watts

52c
Intel Core 2 Duo E6750

187 Watts

51c
Intel Core 2 Extreme X6800

196 Watts

54c
Intel Core 2 Extreme E6800 196 Watts 55
Intel Core 2 Duo E6750@3.5GHZ

224 Watts

62 c

Intel Core 2 Duo E6750 and E6550 :  power Consummation

Intel Core 2 Duo E6750 and E6550 :   temperature

New G0 stepping has lower power consumption and as a result lower temperature .

Conclusion

As conclusion Core 2 Duo E6X50 don't bring any noticeable performance boost with the 1333 Mhz system bus .But the high overclocking capability , low price , lower than previous processor energy consumption make them very attractive for new purchase .







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Intel Core 2 Duo E6750 vs E6550 Fsb 1333 vs 1066 Mhz review







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