SLI / CrossFire FAQs - Page 5
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Last response: in Graphics & Displays
jtabler
June 23, 2008 5:10:11 PM
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teltra
July 23, 2008 11:55:39 PM
hi im new to this but i need some help, i have just bought another evga 8800 gts 640mb acs3 ko edition and ran 3dmark06 (Full version) with a single card i get 9724 but when i sli them i get 9089 thought thats abit strange. here is my rig
e6850 x2 3.0ghz
6gb adata ddr2 800 6400
evga 680i mobo
2x 8800gts ko sli
500gb hdd
coolmaster 650w psu
i thought with sli i should be pushing 12k
the sli is all setup ok
e6850 x2 3.0ghz
6gb adata ddr2 800 6400
evga 680i mobo
2x 8800gts ko sli
500gb hdd
coolmaster 650w psu
i thought with sli i should be pushing 12k
the sli is all setup ok
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Reply to teltra
I dont think there is a problem with your system,when you run 3DMARK, you run it in 1280x1024 resolution which barely benefits from SLI,so you can do something else,you can run it with higher resolution like 1680x1050 or 1920x1200 and then you will see it will benefit from SLI.
Also don't worry about 3DMARK so much,run some games and see what will happen,playing games and getting good FPS is more important than 3DMARK.
Also don't worry about 3DMARK so much,run some games and see what will happen,playing games and getting good FPS is more important than 3DMARK.
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Reply to Maziar
johnwong1313
July 26, 2008 2:56:08 AM
Actually, with Cat 8.1 and newer, you can mix a 3850 and 3870 in crossfire. If I ever get a crossfire mobo I plan on giving it a try.
http://www.fudzilla.com/index.php?Itemid=40&id=5641&opt...
http://www.cpu3d.com/index.php?option=com_content&task=...
BTW, same goes for mixing a 4870 with a 4850.
http://www.hardwarecanucks.com/forum/hardware-canucks-r...
http://www.fudzilla.com/index.php?Itemid=40&id=5641&opt...
http://www.cpu3d.com/index.php?option=com_content&task=...
BTW, same goes for mixing a 4870 with a 4850.
http://www.hardwarecanucks.com/forum/hardware-canucks-r...
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Reply to pauldh
So why doesnt the chart say that?
http://game.amd.com/us-en/content/images/crossfirex/CF_...
http://game.amd.com/us-en/content/images/crossfirex/CF_...
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Reply to Maziar
techgeek276
August 24, 2008 11:18:05 PM
I have a Triple SLI Nvidia "SUPER PC" and it's really awesome. Most of the time
I turn off the SLI because I have a Quad Multiple Monitor Display with four LCDs.
During the day, it is my Day Trading Computer, but at night, I crank up that SLI
and hook it into my 60" LG Plasma and play the heck out of some video games!
Man, it makes those graphics so smooth because I have three 512MB GDDR3
Graphics cards that combine into one giant monster video card. Unfortunately, you
can't use multiple monitors when the SLI is on. However, I think they have a
new breed of SLI coming out that can support the multi-monitor function.
I turn off the SLI because I have a Quad Multiple Monitor Display with four LCDs.
During the day, it is my Day Trading Computer, but at night, I crank up that SLI
and hook it into my 60" LG Plasma and play the heck out of some video games!
Man, it makes those graphics so smooth because I have three 512MB GDDR3
Graphics cards that combine into one giant monster video card. Unfortunately, you
can't use multiple monitors when the SLI is on. However, I think they have a
new breed of SLI coming out that can support the multi-monitor function.
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Reply to techgeek276
Tommar
September 10, 2008 6:20:36 AM
I'm free at last!
Great post, thanks! I've been trying to figure out what I need a for a new system, and it was really bumming me out that my motherboard choice was dependent upon whether I wanted to go SLI or Crossfire. Seemed like the tail wagging the dog, but I built my current system 7 or 8 years ago, so what do I know? Other than, if you start out with solid infrastructure, you can get by for 7 or 8 years with only minor upgrades, even for a game machine.
Now I just need to figure out what motherboard to get. Though I still kinda want the Asus Rampage.
Great post, thanks! I've been trying to figure out what I need a for a new system, and it was really bumming me out that my motherboard choice was dependent upon whether I wanted to go SLI or Crossfire. Seemed like the tail wagging the dog, but I built my current system 7 or 8 years ago, so what do I know? Other than, if you start out with solid infrastructure, you can get by for 7 or 8 years with only minor upgrades, even for a game machine.
Now I just need to figure out what motherboard to get. Though I still kinda want the Asus Rampage.
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Reply to Tommar
kylewood_17
September 16, 2008 9:40:43 AM
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Reply to kylewood_17
kylewood_17
September 16, 2008 9:45:28 AM
oops forgot to paste it.
<a href="http://www.tomshardware.com/charts/gaming-graphics-char...">Tom's Hardware - Benchmark Sum of FPS Benchmarks 1680x1050 AA</a>
<a href="http://www.tomshardware.com/charts/gaming-graphics-char...">Tom's Hardware - Benchmark Sum of FPS Benchmarks 1680x1050 AA</a>
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Reply to kylewood_17
kylewood_17
September 16, 2008 7:32:11 PM
wwpixel
September 29, 2008 10:41:56 PM
Hello
Something's been keeping me up.
I have "ga 965p ds4" MB, with 16x 4x crossfire support.
I was planning to get 4870 1gb card, and then later another one. But your report raised some questions.
16x 4x is NOT recomended you say.
So, should I buy 4870 1gb, and then later when getting another one also change MB? What exactly happens if I push 4870 into 4x pcie?
Should I go with 1gb now and worry about crappy 4x slot later? Or should I save some more juice and just get 4870 X2?
What's the estimated performance difference with two 4870 16x 16x vs 16 4x? I'm handling 42' so prefered resolution is 1920*1080.
Thank you in advance.
Something's been keeping me up.
I have "ga 965p ds4" MB, with 16x 4x crossfire support.
I was planning to get 4870 1gb card, and then later another one. But your report raised some questions.
16x 4x is NOT recomended you say.
So, should I buy 4870 1gb, and then later when getting another one also change MB? What exactly happens if I push 4870 into 4x pcie?
Should I go with 1gb now and worry about crappy 4x slot later? Or should I save some more juice and just get 4870 X2?
What's the estimated performance difference with two 4870 16x 16x vs 16 4x? I'm handling 42' so prefered resolution is 1920*1080.
Thank you in advance.
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Reply to wwpixel
Hello and welcome to the forums mate
Well as i said 16x4x mode will kill your CrossFire performance,if u want to get a HD 4870 now and get another one later so you have 2 choices:
1_Change the motherboard to a X38 one when you want to buy the second HD 4870.
2_(Recommended)Instead of gettign 2 HD 4870s get 1 HD 4870X2 which requires one PCI-E 16x slot and keep your motherboard.
The difference is very noticable between 16x4x and dual 16x.
Well as i said 16x4x mode will kill your CrossFire performance,if u want to get a HD 4870 now and get another one later so you have 2 choices:
1_Change the motherboard to a X38 one when you want to buy the second HD 4870.
2_(Recommended)Instead of gettign 2 HD 4870s get 1 HD 4870X2 which requires one PCI-E 16x slot and keep your motherboard.
The difference is very noticable between 16x4x and dual 16x.
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Reply to Maziar
xizel
October 6, 2008 5:22:34 PM
hi there
First of all congtatulations on this exellent topic!
for my first question:
On the previous post you recomend X38 board, why not x48 ou even a p45?
I think the X38 is becoming a bit out of date.
My Second question and motive for my reading of this topic:
Im am building a new rig, and after all the investigating i've found out that the 4870 1Gb card is the card to get if you are into 1600 resolution gaming (correct me if im wrong).
The motherboard im eyeing is the Asus P5Q Delux, and i have a doubt about it.
in the specs it says:
2 x PCI Express 2.0 x16 slots, support ATI CrossFireXT technology at x8 link
(PCIe x16_1 blue, PCIe x16_2 black*)
so if i understand well it has 2 16x pci slots, just one thing confuses me, what does the x8 link mean?
And why i want to know this, is because im thinking of the future and so i will probably invest in a second graphics card to pair up with my 4870 1Gb. Also would like to know if its is possible and if it is a good idea do eventualy pair a 4870x2 (that will be much more afordable in like 6 to 8 months) with my 4870 1Gb?
because when i will upgrade my rig it will be with a better 30" or 32" screen beeing able to do much higher resolutions than 1600.
Thanks in advance for any tips or advice.
XiZeL
First of all congtatulations on this exellent topic!
for my first question:
On the previous post you recomend X38 board, why not x48 ou even a p45?
I think the X38 is becoming a bit out of date.
My Second question and motive for my reading of this topic:
Im am building a new rig, and after all the investigating i've found out that the 4870 1Gb card is the card to get if you are into 1600 resolution gaming (correct me if im wrong).
The motherboard im eyeing is the Asus P5Q Delux, and i have a doubt about it.
in the specs it says:
2 x PCI Express 2.0 x16 slots, support ATI CrossFireXT technology at x8 link
(PCIe x16_1 blue, PCIe x16_2 black*)
so if i understand well it has 2 16x pci slots, just one thing confuses me, what does the x8 link mean?
And why i want to know this, is because im thinking of the future and so i will probably invest in a second graphics card to pair up with my 4870 1Gb. Also would like to know if its is possible and if it is a good idea do eventualy pair a 4870x2 (that will be much more afordable in like 6 to 8 months) with my 4870 1Gb?
because when i will upgrade my rig it will be with a better 30" or 32" screen beeing able to do much higher resolutions than 1600.
Thanks in advance for any tips or advice.
XiZeL
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Reply to xizel
Thanks mate
About your first question,i recommend X38 over X48 for 2 reasons:
1_The difference between X38 and X48 isn't much
2_X38 is cheaper.
Also X38 is older than P45/X48 but its still a very good chipset.
About P45,well i don't recommend P45 for Dual ATI cards because P45 supports CrossFire at dual 8x mode which sometimes hurts the performance compared to dual 8x mode.
About your second question,ASUS P5Q(P45 series) have 2xPCI-E 16x slot BUT when you want to CrossFire a card then the speed will be dual 8x.
In other words it has 2xPCI-E 16x slot,it means when you have single card it will operate at 16x but when you add another card then both cards will run at 16x.
Yes HD 4870 is good for 1600x1200 gaming,but if you are planing to get a bigger display and CrossFire later,you may want to get a HD 4870X2 instead of HD 4870.
About your first question,i recommend X38 over X48 for 2 reasons:
1_The difference between X38 and X48 isn't much
2_X38 is cheaper.
Also X38 is older than P45/X48 but its still a very good chipset.
About P45,well i don't recommend P45 for Dual ATI cards because P45 supports CrossFire at dual 8x mode which sometimes hurts the performance compared to dual 8x mode.
About your second question,ASUS P5Q(P45 series) have 2xPCI-E 16x slot BUT when you want to CrossFire a card then the speed will be dual 8x.
In other words it has 2xPCI-E 16x slot,it means when you have single card it will operate at 16x but when you add another card then both cards will run at 16x.
Yes HD 4870 is good for 1600x1200 gaming,but if you are planing to get a bigger display and CrossFire later,you may want to get a HD 4870X2 instead of HD 4870.
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Reply to Maziar
xizel
October 6, 2008 9:14:14 PM
Maziar said:
Thanks mate
About your second question,ASUS P5Q(P45 series) have 2xPCI-E 16x slot BUT when you want to CrossFire a card then the speed will be dual 8x.
In other words it has 2xPCI-E 16x slot,it means when you have single card it will operate at 16x but when you add another card then both cards will run at 16x.
i think you meant "both cards will run at 8x" ?
maybe i put it wrong but i was asking if it was a good ideal to eventualy pair up a HD4870 with a 4870X2
since now the X2 is much to expensive and maybe in 6 to 8 months would be more affordable.
so for the same price i shoud get a ASUS P5E ?
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Reply to xizel
xizel
October 7, 2008 11:26:39 AM
Ok thanks for the tip, Maximus Formula is a hard to find here, can find it from 190€ to 250€.
Im not to aware of what capacitators are and what they do?
I also stumbled apon the ASUS P5E DELUXE, its x48 board. what u think about that? its at an afordable 215€.
Also noticed that all these cards have SupremeFX II Audio Card is this card any good? is it onboard or does it take up one of the PCIe slots?
And you havent answered my other question about eventualy
pairing a HD4870 1Gig with a HD4870X2 ? (which is the most on topic question
)
Im not to aware of what capacitators are and what they do?
I also stumbled apon the ASUS P5E DELUXE, its x48 board. what u think about that? its at an afordable 215€.
Also noticed that all these cards have SupremeFX II Audio Card is this card any good? is it onboard or does it take up one of the PCIe slots?
And you havent answered my other question about eventualy
pairing a HD4870 1Gig with a HD4870X2 ? (which is the most on topic question
) -
Reply to xizel
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Reply to Maziar
xizel
October 7, 2008 8:12:54 PM
i can get the P5E Delux for 214€ and the RAMPAGE FORMULA is 241€.
I didnt want to pass the 200€ margin on my board, i got to see what kind of prices i can get ton the MAXIMUS FORMULA.
The HD4870X2 is way over budget for me at the moment, why dont you recomend puting a 4870 with a 4870X2?
Edit:
Just found a
ASUS MAXIMUS FORMULA for 185€
and a
ASUS RAMPAGE FORMULA for 219€
what do you think is the best deal?
Also i have a doubt about my HD4870 1Gb
I can get a Sapphire for 256€
or
POWERCOLOR OC version for 264€
problem is that im not to familiar with POWERCOLOR but i know the OC version has improved cooling
And i know Sapphire is a good reliable brand
I didnt want to pass the 200€ margin on my board, i got to see what kind of prices i can get ton the MAXIMUS FORMULA.
The HD4870X2 is way over budget for me at the moment, why dont you recomend puting a 4870 with a 4870X2?
Edit:
Just found a
ASUS MAXIMUS FORMULA for 185€
and a
ASUS RAMPAGE FORMULA for 219€
what do you think is the best deal?
Also i have a doubt about my HD4870 1Gb
I can get a Sapphire for 256€
or
POWERCOLOR OC version for 264€
problem is that im not to familiar with POWERCOLOR but i know the OC version has improved cooling
And i know Sapphire is a good reliable brand
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Reply to xizel
Go for MAXIMUS FORMULA because as i said the difference isnt much and it will save you some bucks.
I dont recommend you putting a HD 4870 with HD 4870X2 because if you want to CrossFire just get 2 same cards in my opinnion.
If the OC verion has better cooling go for it,i have a SAPPHIRE HD 4870X2 and its performing very well.
I dont recommend you putting a HD 4870 with HD 4870X2 because if you want to CrossFire just get 2 same cards in my opinnion.
If the OC verion has better cooling go for it,i have a SAPPHIRE HD 4870X2 and its performing very well.
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Reply to Maziar
xizel
October 8, 2008 11:21:42 AM
Thank you verry much man you were a big help, i will go for the MAXIMUS FORMULA, its the best option. For the Graphics card im not shure yet... i would love to get a HD4870X2 but its way over budget for me.
once again contrats for the topic, real helpfull i will defenatly be cheking it out again when i upgrade my Rig
thanks again
XiZeL
once again contrats for the topic, real helpfull i will defenatly be cheking it out again when i upgrade my Rig
thanks again
XiZeL
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Reply to xizel
xizel
October 8, 2008 7:37:33 PM
rmstep
October 9, 2008 1:32:03 PM
I have two separate HD4870s which have been in use in separate computers. Now one of the machines is upgraded to a 4870x2, and I want to do Crossfire with the two single 4870s. The problem is that I think I've lost my ribbon cables. I may be able to find one of them, but I think finding both may be impossible.
My question, Will full blown Crossfire work with 1 cable and not have a performance degradation ? I ask because all the crossfire setups I see use 2 cables. Also, if all else fails can I buy the crossfire ribbon cables anywhere?... I have upgraded to an X48 mobo so I will have full x16 crossfire support
Thanks in advance
My question, Will full blown Crossfire work with 1 cable and not have a performance degradation ? I ask because all the crossfire setups I see use 2 cables. Also, if all else fails can I buy the crossfire ribbon cables anywhere?... I have upgraded to an X48 mobo so I will have full x16 crossfire support
Thanks in advance
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Reply to rmstep
xizel
October 9, 2008 2:37:01 PM
rmstep
October 9, 2008 8:07:10 PM
Maziar said:
Do you want to CrossFire 2xHD 4870s ? or do you want to CrossFire 2xHD 4870 with your HD 4870X2?
I will be using Two (single chip) HD4870s... Most of the time I see them, people are using two ribbon cables between the cards. The 4870x2 is in a totally different computer. (it gets confusing talking about two 4870s and the 4870x2
)All the pics I see of the 4870 cards crossfired have 2 ribbon cables... like this:
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Reply to rmstep
xizel
October 13, 2008 11:23:07 AM
xizel
October 14, 2008 12:27:50 AM
krisna159
October 17, 2008 8:38:37 PM
omar954
October 19, 2008 5:36:45 PM
djthewizz
October 23, 2008 9:35:13 PM
is it possible to SLI 8800 GTX with 8800 Ultra ???
both cards are detected and use the same clocking (clock of the GTX) but with nHancer, its said SLI detected but i cant Enable it!!!!
Plz help!!! need an answer fast cause if it dont work with GTX-Ultra, i wanna get another Ultra before they're sold out!!
both cards are detected and use the same clocking (clock of the GTX) but with nHancer, its said SLI detected but i cant Enable it!!!!
Plz help!!! need an answer fast cause if it dont work with GTX-Ultra, i wanna get another Ultra before they're sold out!!
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Reply to djthewizz
djthewizz
October 25, 2008 12:22:19 AM
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!
and the guys from the shop recommend the ASUS P5E WS PRO. what do you think.