Quote:for vram->ram->vram->ram copy stuff all you need is only a good motherboard with 16x PCI-E 2.0.
I really would like to see some proof that pci-e 2.0 would affect this in any way. From a logical perspective the exact opposite would be true. vdram bandwidth should affect fb copy, texture copy, and efb copy (if efb to texture is being used) speed but pci-e bandwidth should not. Or did you simply mean to say that a decent mobo is all that is needed to achieve sufficient speed since vdram bandwidth does not affect performance in dolphin MOST of the time (which I would agree with)?
Quote:well... my 5770 is from xfx with 1300Mhz ram clockspeed so it has about 30% more bandwith compared to the halfed interface of 128bit instead of 256 bit... but there is no difference in speed that is caused by gfx-card in 1920x1200 on both computers.
both are the same.
What game and how was the efb being handled? Was the efb being scaled? Most games are not bottlenecked by vdram bandwidth but I am curious if hyrule field in TP would have a difference, since that is one of the times when performance should logically be affected by fb read/write speed.
Sorry to keep the thread going since the OP already decided but I am really curious about this now that it has been brought up.
(09-17-2010, 09:00 AM)NaturalViolence Wrote: [ -> ]Quote:for vram->ram->vram->ram copy stuff all you need is only a good motherboard with 16x PCI-E 2.0.
I really would like to see some proof that pci-e 2.0 would affect this in any way. From a logical perspective the exact opposite would be true. vdram bandwidth should affect fb copy, texture copy, and efb copy (if efb to texture is being used) speed but pci-e bandwidth should not. Or did you simply mean to say that a decent mobo is all that is needed to achieve sufficient speed since vdram bandwidth does not affect performance in dolphin MOST of the time (which I would agree with)?
if something (a picture for example) is copied from system ram to vram and back to the system ram... then all you need is lots of LOW LATENCY bandwith between both types of ram in your computer...
and what BUS is the bottleneck between these two? PCI-E! (at least its big latency)
16x PCI-E 2.0 Bandwith is: 8000 MB/s (wikipedia told this)
MY system ram bandwith (measured by everest) is: ~8350MB/s
my graphics card's bandwith is: 83,2GB/s! (1300mhz vram clock standard)
Quote:Quote:well... my 5770 is from xfx with 1300Mhz ram clockspeed so it has about 30% more bandwith compared to the halfed interface of 128bit instead of 256 bit... but there is no difference in speed that is caused by gfx-card in 1920x1200 on both computers.
both are the same.
What game and how was the efb being handled? Was the efb being scaled? Most games are not bottlenecked by vdram bandwidth but I am curious if hyrule field in TP would have a difference, since that is one of the times when performance should logically be affected by fb read/write speed.
Sorry to keep the thread going since the OP already decided but I am really curious about this now that it has been brought up.
we tested only f-zero gx and sonic adventure 2 battle.
5770 will do the job m8
.
Im running the radeon hd 5450 $49.00 all games in 1080p no problem what so ever. 4gb ram. dual core 2.52. Has hdmi and dvi out. For the price its fabulous. crossfire support. Runds steam valave games full settings 80fps. uses 2.0 no external power and is the lowest power consuming card I have found in all benchmarks.
A 5450 won't run all games fullspeed at 1920 x 1080, not even close. You have been lucky so far and have only tried games that aren't very gpu heavy, try wind waker at forsaken fortress at 1920 x 1080 and tell me how it runs.
I changed my opinion. I will buy this card as this seems to be the cheapest card that support BD3D decoding and output:
Palit Nvidia GeForce GTX460 (PCI-e, 1024MB GDDR5, HDMI, DVI)
I think this card will be fast enough to play dolphin in 1080p without speedloss by increasing resolution.
gtx460 is more than enough for dolphin and 1080p tv, very good choice.
p.s. kind of off topic, but ATI is unveiling their new 6000-cards on october 19th
(and they will be probably on sale shortly after, maybe in november)
I already sold my 280 and using old gts250 until those cards are out, from preliminary benchmarks they seem pretty (very) solid.