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Where does AIDA64 show me the 66 MHz-AGP bus clock? (ASRock 775i65G + Core 2 Quad Q6700)


Hannes
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Hello, I am 57 years old, I only have primary school English and therefore I have to use Google Translate (German-English) all the time :-(

I am currently building an old system that will allow me to continue using my AGP graphics card and DDR1 SDRAM. The mainboard is an ASRock 775i65G, equipped with an Intel Q6700 quad core, FSB 266 / Multi 10, two Skill RAM's with 2,5/3/3/6

Now I wonder if the FSB increase from originally 200 to 266 Mbit / sec., or higher by overclocking, also affects my sound card in the PCI slot and also the graphics card in the AGP slot?

ASRock writes: **FSB1066-CPU is supported by overclocking only when you adopt an external VGA card and DDR400 CL2.5 memory modules. (That is done!)
Untied Overclocking: During Overclocking, FSB enjoys better margin due to fixed AGP / PCI Buses (How can I verify that?)

https://www.asrock.com/mb/Intel/775i65G R2.0/

My Question: AIDA Extreme shows me something wrong here, or contrary to what the mainboard manufacturer says, the AGP PCI clock is not fixed at all?
 
My AIDA 64 outputs: Motherboard/Motherboard
Chipset Bus Properties
Bus type: Intel Hub Interface
Bus width: 8 bits
!!!Actual clock: 89 MHz (QDR)!!!
Effective clock: 355 MHz
Bandwidth: 355 MB / s 


I would have expected a clock of   66 MHz   instead of 89 MHz if the mainboard had actually blocked the AGP / PCI bus.
 
I also found the following statement on I-Net - quote:
Is this the AGP clock?
Characteristics of the chipset bus
Bus type: VIA V-Link
Bus width: 8 bits
Actual clock: 83 MHz (ODR)
Effective clock: 667 MHz
Bandwidth: 667 MB / s


Because I set it to 66 MHz in the BIOS. So that shouldn't be it? 
 
Grüße aus München
Hannes

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On 2/29/2020 at 7:32 AM, Hannes said:

Hello, I am 57 years old, I only have primary school English and therefore I have to use Google Translate (German-English) all the time :-(

I am currently building an old system that will allow me to continue using my AGP graphics card and DDR1 SDRAM. The mainboard is an ASRock 775i65G, equipped with an Intel Q6700 quad core, FSB 266 / Multi 10, two Skill RAM's with 2,5/3/3/6

Now I wonder if the FSB increase from originally 200 to 266 Mbit / sec., or higher by overclocking, also affects my sound card in the PCI slot and also the graphics card in the AGP slot?

ASRock writes: **FSB1066-CPU is supported by overclocking only when you adopt an external VGA card and DDR400 CL2.5 memory modules. (That is done!)
Untied Overclocking: During Overclocking, FSB enjoys better margin due to fixed AGP / PCI Buses (How can I verify that?)

https://www.asrock.com/mb/Intel/775i65G R2.0/

My Question: AIDA Extreme shows me something wrong here, or contrary to what the mainboard manufacturer says, the AGP PCI clock is not fixed at all?
 
My AIDA 64 outputs: Motherboard/Motherboard
Chipset Bus Properties
Bus type: Intel Hub Interface
Bus width: 8 bits
!!!Actual clock: 89 MHz (QDR)!!!
Effective clock: 355 MHz
Bandwidth: 355 MB / s 


I would have expected a clock of   66 MHz   instead of 89 MHz if the mainboard had actually blocked the AGP / PCI bus.
 
I also found the following statement on I-Net - quote:
Is this the AGP clock?
Characteristics of the chipset bus
Bus type: VIA V-Link
Bus width: 8 bits
Actual clock: 83 MHz (ODR)
Effective clock: 667 MHz
Bandwidth: 667 MB / s


Because I set it to 66 MHz in the BIOS. So that shouldn't be it? 
 
Grüße aus München
Hannes

When they can be detected, the PCI and AGP clocks are shown on the Motherboard / Motherboard page.

As for how the PCI and AGP clocks are driven, it depends on the FSB logic (FSB strap) the motherboard uses.  If it has a different strap for 266 MHz FSB than for 200 MHz FSB, then no overclocking of the PCI and AGP clocks should be used when you switch from 200 MHz FSB to 266 MHz FSB.  In other words, at 200 MHz FSB the PCI clock should FSB/6 (FSB clock divided by 6), and the AGP clock should be double the PCI clock.  If the right FSB strap is used by the motherboard, at 266 MHz FSB the PCI clock should be FSB/8, and the AGP clock should still be double the PCI clock.  To rule out the possibility of AIDA64 detecting the wrong clock frequencies, try to check the same information using other software like CPU-Z, HWiNFO and SIV as well.

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Many thanks for your response.
I installed CPU-Z, but you can't read an AGP bus clock with it. I didn't try the other two tools.
The Internet is also silent when you enter the question of which tool can read the AGP bus clock.
I will have to believe the motherboard manufacturer's statement, which reads: "During Overclocking, FSB enjoys better margin due to fixed AGP / PCI Buses"

Gruß aus München

Hannes

AGP-Bus.dib

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