A possible HD 3870 for AGP

[evolucion8]

http://www.theinquirer.net/gb/...ows-cheap-linux-tablet

They also have a lot of interesting little bits, there was a 1G 3870 non-X2, an AGP 3870 for all of you hanging on to your old P4s, and a 1G 3650 as well. Basically, GeCube had a bunch of off-spec cards that might interest you if stock is too dull.

Interesting, will GeCube break again the boundaries and releases the HD 3870? like they did being the only ones releasing the X1950XT??

 

[BTRY B 529th FA BN]

i'd pick up one of those 3870 AGP cards just to see the performance for this old machine here

... i'm on a RDR Rambus rig right now, WOOT!

 

[Insomniator]

Besides SLI, if these cards stilll aren't taxing the AGP bus then what was the point of PCI express?

 

[apoppin]

Originally posted by: Insomniator
Besides SLI, if these cards stilll aren't taxing the AGP bus then what was the point of PCI express?

they are finally saturating the bus

4xPCIe is approximately equal to 8xAGP ... and it will hold back a GT8800/HD3800 class card

 

[bryanW1995]

have you tried switching out your 2900xt with the 2900pro to see how much performance hit you take from having the xt on the 4xpcie slot?

also, why is 4x pci-e the same as 8x agp?

 

[evolucion8]

Theý're not the same, PCIe at 4x runs both upstream and downstream at 1GB/s, while AGP runs downstream at 2.1GB/s while Upstream is only 533MB/s. Downstream is far more important than upstream, since videocards rarely reads what it writes.

 

[apoppin]

Originally posted by: bryanW1995
have you tried switching out your 2900xt with the 2900pro to see how much performance hit you take from having the xt on the 4xpcie slot?

also, why is 4x pci-e the same as 8x agp?

it is a very rough "same" .. as Ev8 pointed out, the 'up' is pretty constricted while the 'down' is faster

and i already tried it .. several of us have .. it even affects an O/C'd x1950p a little bit .. XT appears to have *about* a [very roughly] -15% performance loss in my rig by placing it in the 2nd slot

 

[tuteja1986]

AGP just needs to die )

Go quad core / dual core

 

[will889]

lmao

 

[apoppin]

Originally posted by: tuteja1986
AGP just needs to die )

Go quad core / dual core

what does the CPU have to do with it ?

i had my C2D and a AGP x1950P

 

[bryanW1995]

um tuteja...wtf are you talking about? are you saying that the op needs to sell his current rig and buy a quad core cpu with a dual core gpu (ie 3870x2 or 9800gx2)? Or do you think that he should get a "quad" number of gpu cores on a dual core cpu, ala 790fx with 4x3870?

 

[tuteja1986]

Originally posted by: bryanW1995
um tuteja...wtf are you talking about? are you saying that the op needs to sell his current rig and buy a quad core cpu with a dual core gpu (ie 3870x2 or 9800gx2)? Or do you think that he should get a "quad" number of gpu cores on a dual core cpu, ala 790fx with 4x3870?

lol i meant get an upgrade :!

Get a 3850GPU PCIE with Intel 8400 45nm cpu

 

[lemonadesoda]

Originally posted by: apoppin
4xPCIe is approximately equal to 8xAGP ... and it will hold back a GT8800/HD3800 class card

Nonsense. PCIe x8 is approx equivalent to 8xAGP. Why? Because PCIe bandwidths are quoted as simultaneous send+receive. But for a video card 99% of data is ONE WAY.

Look at all the benchmarks where a PCIe x16 card is moved to a PCIe x8 slot. The performance loss is so small its not worth mentioning.

In practice:

I have a Q6600 and AGP 3850. Interestingly, my system seems to be "at the top of the table" for 3850's on the FurMark benchmark. Take a look:
http://forums.techpowerup.com/...p?p=477330&postcount=1

 

[fleabag]

Where is this Radeon HD 3870 AGP???? They had it at Computex 2008 apparently yet I cant see where it can be purchased. I realize this is an old thread but I feel it's appropriate to post in it nonetheless.

 

[Creig]

Originally posted by: fleabag
Where is this Radeon HD 3870 AGP???? They had it at Computex 2008 apparently yet I cant see where it can be purchased. I realize this is an old thread but I feel it's appropriate to post in it nonetheless.

cough, cough... (thread dust)


I don't know that I ever saw a 3870 AGP for sale, but Newegg still carries a few 3850 AGP models.

 

[AstroManLuca]

I doubt a 3870 AGP would help much. Like people said earlier in this (old) thread, they pretty much hit the limit for AGP right around the time they started phasing it out. Remember that it took a few years for PCIe to go from being the newcomer to the sole standard. I remember building a PCIe-based system in 2004, but there were new AGP cards being produced up until about a year ago.

 

[fleabag]

Anyone else know of a 3870 AGP?

 

[TurtleCrusher]

Uhh yeah i had one but i uhh.. gave it back..

:-/