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FSB800: first impression and a look into the future

FSB800: first impression and a look into the future

Test results

Now let's get to that probably the most interesting part, the test results. During our test, we stuck to our own specifications from previous processor tests . The program descriptions given there also apply here.

The following are on an Asus P4PE motherboard:

  • Intel Pentium 4 2.40 GHz FSB400 - memory: 512MB PC3200 (Rambus)
  • Intel Pentium 4 2.40 GHz FSB533 - memory: 512MB PC4200 (Rambus)
  • Intel Pentium 4 2.40 GHz FSB533 - memory: 512MB DDR355
  • Intel Pentium 4 2.40 GHz FSB800 - memory: 512MB DDR400
P4 2,4 FSB533
P4 2,4 FSB800

The fact that the FSB533 processor had to be satisfied with DDR355, while we were forced to use DDR400 on the FSB800 due to the clock divider, this is unfortunate, but unavoidable. As soon as possible we will try to repeat this test on one of the currently rare E7205 mainboards.

Memory throughput

Sandra memory throughput
  • Int Buffered:
    • P4 2.4 GHz FSB533 RIMM4200
      3.354
    • P4 2.4 GHz FSB800 DDR400
      2,996
    • P4 2.4 GHz FSB533 DDR355
      2.732
    • P4 2 , 4 GHz FSB400 RIMM3200
      2.553
  • Performance gain :
    • P4 2.4 GHz FSB533 RIMM4200
      123
    • P4 2.4 GHz FSB800 DDR400
      110
    • P4 2.4 GHz FSB533 DDR355
      100
    • P4 2.4 GHz FSB400 RIMM3200
      93

Well, the difference between DDR355 and DDR400 can be clearly seen here. Since the FSB800 has to wait for the data in the same way as the FSB533, the increased front side bus does not increase the data transfer rates. When it appears, however, it will possibly be able to reach 5 GB/s with Dual DDR400.

3DMark2001 SE

Madonion 3DMark2001 SE
Unit: points
    • P4 2.4 GHz FSB800 DDR400
      12,389
    • P4 2.4 GHz FSB533 RIMM4200
      12,098
    • P4 2.4 GHz FSB533 DDR355
      11,874
    • P4 2.4 GHz FSB400 RIMM3200
      11.428
  • Performance gain:
    • P4 2.4 GHz FSB800 DDR400
      104
    • P4 2.4 GHz FSB533 RIMM4200
      102
    • P4 2.4 GHz FSB533 DDR355
      100
    • P4 2.4 GHz FSB400RIMM3200
      96

The first surprise. So far, the Rimm4200 (PC4200) has always won first places in 3DMark 2001, but although the bandwidth of DDR400 is still 3.2GB/s below that of PC4200 (4.2GB/s), the higher FSB of 800MHz wins in your own warehouse - not bad.

Madonion 3DMark 2001 SE Detail
  • Game 1 High:
    • P4 2.4 GHz FSB800 DDR400
      68.0
    • P4 2.4 GHz FSB533 RIMM4200
      63.5
    • P4 2.4 GHz FSB533 DDR355
      62.9
    • P4 2.4 GHz FSB400 RIMM3200
      60.1
  • Performance gain:
    • P4 2.4 GHz FSB800 DDR400
      108.0
    • P4 2.4 GHz FSB533 RIMM4200
      101.0
    • P4 2.4 GHz FSB533 DDR355
      100.0
    • P4 2.4 GHz FSB400 RIMM3200
      95.5

A good seven percent advantage despite the storage handbrake on. The result gives hope for the FSB800 in cooperation with Dual DDR400.

Comanche 4

Comanche 4
  • 1024x768x32:
    • P4 2.4 GHz FSB800 DDR400
      53.2
    • P4 2.4 GHz FSB533 RIMM4200
      51,8
    • P4 2.4 GHz FSB533 DDR355
      51,5
    • P4 2.4 GHz FSB400 RIMM3200
      49 , 7
  • Performance gain:
    • P4 2.4 GHz FSB800 DDR400
      103.3
    • P4 2.4 GHz FSB533 RIMM4200
      100.7
    • P4 2.4 GHz FSB533 DDR355
      100.0
    • P4 2.4 GHz FSB400 RIMM3200
      96.6

Here, too, a previous parade discipline from Rambus, FSB800 beats even with single channel DDR400.

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