DDR3>DDR2 Performance Decrease...AMD Hexacore

bongas · 6 Sep 2010 at 11:43

hi, i wanted to know that how much performance decrease can one suffer with an AMD x6 1090T coupled with an AM2+ board considering that its hypertransport speed is limited till 2600MHz while the x61090T can support upto 3600MHz.

Remember that the question related to an AM3 board.(a comparison between an AM3 and an AM2+)

Look at this board from MSI:

http://www.msi.com/index.php?func=prodmbspec&maincat_no=1&cat2_no=&cat3_no=&prod_no=1883

This is one of the great boards for such low price and it also supports the
x6 1090T.

gareth170 · 6 Sep 2010 at 12:49

using it in a am2+ board won't lose any performance.

if u use it in a am2 board u would see a slight drop in performance..

the only different between am2+ & am3 is the ram and chipset 8 series

Big.Wayne · 6 Sep 2010 at 14:58

Bongas is basically asking is it a good idea for him to build a new system using an AM3 chip with a AM2+ motherboard in order than he can keep his older DDR2-800 memory . . .

i.e would there be a performance difference between these two systems

AMD® Phenom™ II X6 in AM2+mobo/DDR2-800
AMD® Phenom™ II X6 in AM3 mobo/DDR3-1600

old thread here [LGA775] Board for Overclocking]

oLysmoLy · 7 Sep 2010 at 01:55

bongas said:
hi, i wanted to know that how much performance decrease can one suffer with an AMD x6 1090T coupled with an AM2+ board considering that its hypertransport speed is limited till 2600MHz while the x61090T can support upto 3600MHz.

Remember that the question related to an AM3 board.(a comparison between an AM3 and an AM2+)

Look at this board from MSI:

http://www.msi.com/index.php?func=prodmbspec&maincat_no=1&cat2_no=&cat3_no=&prod_no=1883

This is one of the great boards for such low price and it also supports the
x6 1090T.

not 100% but i a, quite sure the amd is nt worth the money

gareth170 · 7 Sep 2010 at 09:15

oLysmoLy said:
not 100% but i a, quite sure the amd is nt worth the money

why??

Mak3R · 7 Sep 2010 at 09:35

gareth170 said:
why??

+1

Big.Wayne · 7 Sep 2010 at 11:37

Focus on bongas (o.p) and the question he is asking!

Post #1

dfour · 7 Sep 2010 at 11:59

On of the reasons I didnt bother upgrading my ddr2 rig to ddr 3 depsite changing from a am2 cpu to a am3 cpu is the results showing ddr 3 not having much gain over ddr 2 except in synthetic tests but where gaming was concerned maybe a couple of frames per second.

I have read that the hexa cres Mc is slightly improved but I cant think it will be imroved that much to make a noticable difference.

Big.Wayne · 7 Sep 2010 at 17:01

dfour said:
the results showing ddr 3 not having much gain over ddr 2 except in synthetic tests but where gaming was concerned maybe a couple of frames per second.

Yup I was thinking the same thing . . . I'd be interested to see a more comprehensive set of results myself . . .

I am using AM3/CPU & AM2+/DDR2 and the performance is fine! . . . . any useful feedback will be greatly appreciated by bongas! :cool:

bongas · 7 Sep 2010 at 17:29

gareth170 said:
using it in a am2+ board won't lose any performance.

if u use it in a am2 board u would see a slight drop in performance..

the only different between am2+ & am3 is the ram and chipset 8 series

It would be much appreciated if you provide valid proof to back it up.

bongas · 7 Sep 2010 at 17:32

@bigwayne....Thanks for making it easy for the readers to answer this query by posting my original thread.

Now , all you have talked about is rams but it is noteworthy that the main concern isn't rams and thier relative performances but instead i want you all to focus on the CPU performance considering that the hypertransport speed is limited in an AM2+ board as compared to an AM3 board.

Big.Wayne · 7 Sep 2010 at 17:39

bongas said:
an AMD x6 1090T coupled with an AM2+ board considering that its hypertransport speed is limited till 2600MHz while the x61090T can support upto 3600MHz.

bongas said:
i want you all to focus on the CPU performance considering that the hypertransport speed is limited in an AM2+ board as compared to an AM3 board.

Hello bongas,

I was not aware there was any difference in the "hypertransport speed" on AM2+ vs AM3? . . . I thought it was 2.0GHz on both platforms? :confused:

bongas said:
the main concern isn't rams and thier relative performances

I don't think there will be any difference in performance between the two platforms "except" for the memory (DDR2 vs DDR3) . . .

gareth170 · 7 Sep 2010 at 17:42

bongas said:
It would be much appreciated if you provide valid proof to back it up.

i've had both am2+ & am3 boards with a 965 , there was no differents in real world performance..

am2+ boards as the same hypertransport speeds as the am3 boards (both supports Up to 5200 MT/s HyperTransport 3.0)

as i said above the only different between am2+ & am3 is the ram type and chipset 8 series. the cpu performance is the same on both platforms.

bongas · 7 Sep 2010 at 18:06

@gareth170....... Did i get it wrong or you made a mistake that the maximum supported HT is 5200Mt/s......... i am pretty sure the link says 2600MT/s

(FOR AM2+ boards)

bongas · 7 Sep 2010 at 18:15

Big.Wayne said:
Hello bongas,

I was not aware there was any difference in the "hypertransport speed" on AM2+ vs AM3? . . . I thought it was 2.0GHz on both platforms?

I dont know...that is why i started the thread??? :rolleyes:

Big.Wayne · 7 Sep 2010 at 18:25

bongas said:
I dont know...

Hey again bongas,

I'm not sure if your getting twisted up in the tiniest of details but for the sake of thoroughness can you tell me where you are getting the following information from please?

. . i.e is it a link or?

bongas said:
an AM2+ board considering that its hypertransport speed is limited till 2600MHz while the x61090T can support upto 3600MHz

gareth170 · 7 Sep 2010 at 18:35

bongas said:
@Gareth170....... Did i get it wrong or you made a mistake that the maximum supported HT is 5200Mt/s......... i am pretty sure the link says 2600MT/s

(FOR AM2+ boards)

download the manuel http://www.msi.com/index.php?func=downloadfile&dno=9939&type=manual

Mainboard Specifications
Processor Support
AMD® Athlon64/ Athlon64 FX/ Athlon64 X2/ Sempron/ Phenom processors in AM2/
AM2+ package
AMD® processors in AM3 package
Up to 6000+ and higher CPU
(For the latest information about CPU, please visit
http://www.msi.com/index.php?func=cpuform2)
HyperTransport
Supports HyperTransport(HT) 3.0 Technology
Chipset
North Bridge: AMD® 785G chipset
South Bridge: AMD® SB710 chipset
Memory Support
DDR2 667/ 800/ 1066 SDRAM (8GB Max)
2 DDR2 DIMMs (240pin / 1.8V)
(For more information on compatible components, please visit
http://www.msi.com/index.php?func=testreport)
LAN
Supports LAN 10/100/1000 Fast Ethernet by Realtek® RTL 8111C
Audio
Chip integrated by Realtek® ALC888S
Flexible 8-channel audio with jack sensing
Compliant with Azalia 1.0 Spec
IDE
1 IDE port by AMD® SB710
Supports Ultra DMA 33/66/100/133, PIO & Bus Master operation mode
SATA
6 SATAII ports by AMD® SB710
Supports storage and data transfers at up to 3.0 Gb/s
RAID
Supports RAID 0/ 1/ 0+1/ JBOD mode by SB710
Floppy
1 floppy port
Supports 1 FDD with 360KB, 720KB, 1.2MB, 1.44MB and 2.88MB
Connectors
Back panel
1 PS/2 mouse port
1 PS/2 keyboard port
1 VGA port
1 DVI-D port
1 HDMI port-----
4 USB 2.0 Ports
1 LAN jack
6 flexible audio jacks
On-Board Connectors
4 USB 2.0 connectors
1 Serial connector
1 CD-In connector
1 Front Panel Audio connector
1 Chassis Intrusion connector
1 SPDIF-Out connector
1 TPM connector (optional)
1 Parallel connector
1 OC switch
Slots
1 PCI Express Gen2.0 x16 slot
1 PCI Express x1 slot
2 PCI slots, support 3.3V/ 5V PCI bus Interface
Form Factor
Micro-ATX (24.4cm X 22.9 cm)
---

thingemajib · 7 Sep 2010 at 18:36

all current socket AM2+ and AM3 processors only support a maximum (stock) HT speed of 2000MHz. That i know for definate.

I think the socket itself might be able to support UPTO 3200MHz (or 6400MT/s), should AMD decide to release a new processor that supports that speed. That im not so sure about.

I think you are confusing with either:
a), the 1090T clock speed, which had a stock of 3200MHz, but can turbo upto 3600MHz.

b), the HT transfer rate, which is measured at twice the clock speed, as it can make one tranfer with the rise and fall of the clock signal (just like DDR ram). Some AM2+/AM3 processors have a HT speed of 1800MHz, hence a transfer rate of 3600MT/s (Mega-tranfers per second).

Another thing - When i had issues getting my setup running, i had to contend with a 1000Mhz HT link for a while. People told me this would not be a bottleneck even at this speed. Tried a benchie or two, and scores were morealess the same.

extremely long story short: No, The 1090T will not be HT limited in any way in an AM2+ board.

Muel · 7 Sep 2010 at 18:36

HT defaults to 2000mhz on both AM2+ and AM3. Fairly certain.

It might be possible to go as high as they state, but I doubt any AM3 setup can go above a 2600mhz HT link. I got 2400mhz but unstable, 2200mhz stable.

gareth170 · 7 Sep 2010 at 18:56

am2+ am3 is HT 3.0 which = 2.6ghz max