CPU Interface setting on NF2 mobos (Dfi NF2 Ultra series esp)

  • Thread starter Thread starter Nil Einne
  • Start date Start date
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Nil Einne

Hey all,

Could someone explain what CPU interface does? I haven't managed to
find any explanation other then it might improve overclockability. One
site suggested it had something to do with fast decode but since it
was only in this site and only in one review, I'm not really that
sure. In any case, I don't know what fast decode is. I gather that
some bioses have it as aggresive and optimal and some have it as
enabled and disabled but all seem to claim it improves
overclockability but may reduce stability.

I have come across one site claiming it increases overclockability but
reduced performance although how wasn't explained. Also, the Dfi beta
bios information appears to suggest that aggressive is good for
overclocking but below 10x multiplier there's lost memory bandwidth
(or perhaps there always is, it just wasn't properly reported?).

I'm really confused and would really like some clarification. Thanks
for all help.
 
Hey all,
Could someone explain what CPU interface does?
Click to expand...

Hi,
if you can get it enabled, use it. It gives me higher memory bandwidth, but
I have problems having it enabled above 200MHz-FSB
--
Wayne ][

Barton (AQXEA) XP2500+ @ 2.2GHz (10x220) - 1.75vCore
CoolerMaster Aero 7 Lite - 3,200rpm
ABIT NF7-S v2.0 (BIOS d20)
512MB Dual TwiSTER PC3500 @ DDR440 1:1 (2.0,3,3,9 - 2.7v)
Sapphire Atlantis 9800 - 3.3ns Samsung (325/290 Default)
WD-SE 240GB (2x120GB) SATA RAID-0 (NTFS - 16k Stripe)
Antec SX630II Mini-Tower Case Inc 300w PSU
2 x CoolerMaster 80mm Blue Neon Fans
WinXP PRO inc. SP1
nVidia Unified v3.13
Cat 3.7 - DX9.0b
 
It sets the latency twixt CPU and chipset.


Wayne Youngman said:
Hey all,
Could someone explain what CPU interface does?
Click to expand...

Hi,
if you can get it enabled, use it. It gives me higher memory bandwidth, but
I have problems having it enabled above 200MHz-FSB
--
Wayne ][

Barton (AQXEA) XP2500+ @ 2.2GHz (10x220) - 1.75vCore
CoolerMaster Aero 7 Lite - 3,200rpm
ABIT NF7-S v2.0 (BIOS d20)
512MB Dual TwiSTER PC3500 @ DDR440 1:1 (2.0,3,3,9 - 2.7v)
Sapphire Atlantis 9800 - 3.3ns Samsung (325/290 Default)
WD-SE 240GB (2x120GB) SATA RAID-0 (NTFS - 16k Stripe)
Antec SX630II Mini-Tower Case Inc 300w PSU
2 x CoolerMaster 80mm Blue Neon Fans
WinXP PRO inc. SP1
nVidia Unified v3.13
Cat 3.7 - DX9.0b
Click to expand...
 
Top-poster said:
It sets the latency twixt CPU and chipset.
Click to expand...


That would be my guess... since enabling it or setting it to aggressive
raises memory bandwidth (which is usually measured across the FSB as the
limiting factor). Since the frequency of the FSB is fixed, to improve
performance you need to reduce latency.

Ben
 
Then, good guess.


Ben Pope said:
That would be my guess... since enabling it or setting it to aggressive
raises memory bandwidth (which is usually measured across the FSB as the
limiting factor). Since the frequency of the FSB is fixed, to improve
performance you need to reduce latency.

Ben
Click to expand...
 
| Since the frequency of the FSB is fixed, to improve
| performance you need to reduce latency.

What if bios is already set to follow dimms' spd i.e. eeprom ?
 
Cheah TE said:
| Since the frequency of the FSB is fixed, to improve
| performance you need to reduce latency.

What if bios is already set to follow dimms' spd i.e. eeprom ?
Click to expand...


This is a known issue - set manually, not with SPD.
 
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