Opteron and X2 explained.

[robertk2012]

Originally posted by: BriGy86
and what about the hyper transport?

opterons look like they do 1000Mhz while the X2's do 2000Mhz, is there anyway that can be utilized? wouldn't the motherboard have a cap or something

Just two different ways of measuring the same thing.

 

[BriGy86]

Originally posted by: robertk2012

Originally posted by: BriGy86
and what about the hyper transport?

opterons look like they do 1000Mhz while the X2's do 2000Mhz, is there anyway that can be utilized? wouldn't the motherboard have a cap or something

Just two different ways of measuring the same thing.

is it an extra 1000Mhz or do they in actuallity go the same speed?

 

[robertk2012]

Originally posted by: BriGy86

Originally posted by: robertk2012

Originally posted by: BriGy86
and what about the hyper transport?

opterons look like they do 1000Mhz while the X2's do 2000Mhz, is there anyway that can be utilized? wouldn't the motherboard have a cap or something

Just two different ways of measuring the same thing.

is it an extra 1000Mhz or do they in actuallity go the same speed?

They are both the same speed. Its kind of like the way ddr ram speeds are measured.

 

[Absolute0]

Hypertransport speeds, HTT values, and the LDT multiplier have basically 0 impact on performance. It's all clockspeed, ram speed, ram timings.

Robert i agree with everything you say, thanks for writing this

 

[robertk2012]

Originally posted by: Absolute0
Hypertransport speeds, HTT values, and the LDT multiplier have basically 0 impact on performance. It's all clockspeed, ram speed, ram timings.

Robert i agree with everything you say, thanks for writing this

Weill its basically 0 impact on performance somewhere around 750 (1500) or so. Most motherboards crap out shortly after 1000 (2000) so your basically just using your multipliers to keep it within that range.

Like absolute0 its all clockspeed and ram. With clockspeed being by the the most important as long as your ram is running somewhere near ddr400 speeds

 

[Just4Ever]

Can someone explain to me what it means to have tight memory timings. I know about the 4 timings and it seems the lower the better, but how does one know what to set them at in order to keep the computer running. For example, do you increase the first number or the last number first? Also, is it better to have tighter memory timings and a lower clockspeed or vice versa?

 

[Viditor]

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

 

[Viditor]

Originally posted by: BriGy86
and what about the hyper transport?

opterons look like they do 1000Mhz while the X2's do 2000Mhz, is there anyway that can be utilized? wouldn't the motherboard have a cap or something

Both Opterons and X2s use 1000 MHz each way, so the net for all is 2000 MHz (no difference between Opty or X2).

Edit: To clarify, an HT link is 2 one-way point to point connections.

 

[robertk2012]

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

Actuall the 1xx have 3 links 0 are coherent. The 2xx have 3 links 1 of which is coherent. Ans the 8xx have 3 links with 3 coherent links.

 

[Viditor]

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

Actuall the 1xx have 3 links 0 are coherent. The 2xx have 3 links 1 of which is coherent. Ans the 8xx have 3 links with 3 coherent links.

My apologies, I was referring to the 1xx 939 Optys...for the 940s you are correct. And I appreciate the correction on the 8xx (off in space when I typed that...)

 

[robertk2012]

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

Actuall the 1xx have 3 links 0 are coherent. The 2xx have 3 links 1 of which is coherent. Ans the 8xx have 3 links with 3 coherent links.

My apologies, I was referring to the 1xx 939 Optys...for the 940s you are correct. And I appreciate the correction on the 8xx (off in space when I typed that...)

all 1xx are 939 arent they?

 

[Viditor]

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

Actuall the 1xx have 3 links 0 are coherent. The 2xx have 3 links 1 of which is coherent. Ans the 8xx have 3 links with 3 coherent links.

My apologies, I was referring to the 1xx 939 Optys...for the 940s you are correct. And I appreciate the correction on the 8xx (off in space when I typed that...)

all 1xx are 939 arent they?

Only since 90nm...all others were 940.
Have a look at the Spec page at AMD...
Link
It can be quite confusing, but if you look at the tech specs for "Opteron", they are from 2004 and don't cover the 939 Opterons (at least as far as HT is concerned). The 939 optys are now cherry-binned A64s.

 

[robertk2012]

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: Viditor

Originally posted by: robertk2012

Originally posted by: jose
What about HT's on each chip X2 vs Opteron ? I think the Opteron has 3 HT's and the X2's only 1 HT..

There's a new mobo coming out the Asus K8N-LR http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=247067

I think this mobo w/ pci-e and pci-x will require a Opteron w/ 3 HT's to use both pci-e & pci-x at the same time.

Regards,
Jose

Its true that the opterons have 3 HT's and the x2s only have one. The way I understood it though was that it shouldnt have any real impact on performance. I dont know about using pci-e and pci-x at the same time. Maybe on that board as it may provide a seperate link to one of the non coherent HTs.

Actually, different Opterons have different number of HT links. The 1xx have only one HT link...2xx have 2 HT links (1 cHT and 1 HT), and 8xx have 3 HT links (2 cHT and 1 HT).
A cHT link is a coherent HT link that connects directly to the cache...

Actuall the 1xx have 3 links 0 are coherent. The 2xx have 3 links 1 of which is coherent. Ans the 8xx have 3 links with 3 coherent links.

My apologies, I was referring to the 1xx 939 Optys...for the 940s you are correct. And I appreciate the correction on the 8xx (off in space when I typed that...)

all 1xx are 939 arent they?

Only since 90nm...all others were 940.
Have a look at the Spec page at AMD...
Link
It can be quite confusing, but if you look at the tech specs for "Opteron", they are from 2004 and don't cover the 939 Opterons (at least as far as HT is concerned). The 939 optys are now cherry-binned A64s.

Ill have to disagree with part of that. I will agree that there are 940 and embeded opteron 1xx series but the 939 have 3 ht links

read Link

 

[Viditor]

Originally posted by: robertk2012

Ill have to disagree with part of that. I will agree that there are 940 and embeded opteron 1xx series but the 939 have 3 ht links

read Link

I stand corrected...good catch! (and thanks)

 

[robertk2012]

Originally posted by: Viditor

Originally posted by: robertk2012

Ill have to disagree with part of that. I will agree that there are 940 and embeded opteron 1xx series but the 939 have 3 ht links

read Link

I stand corrected...good catch! (and thanks)

;-)