Your E8500 wont bottleneck. you have enough power crossfire that bad boy.should i get a 4890, or crossfire 2 4870 512's??
[QUOTE=''04dcarraher'']Your E8500 wont bottleneck. you have enough power crossfire that bad boy.[/QUOTE]2 HD4870s > 1hd4890really just save the money and wait a few weeks prices will drop and the 5800 series will be released
i would wait and save honestly so far the 5870 looks to be very powerful card
Ya, I'm kinda on a budget right now. I agree the 5870 is gonna be sweet, but I put myself on a strict budget for the next year, so I'm looking for a cheap alternitive for now. Would a 4870 512 crossfire give me a boost, or would the 512 still hamper me at 1900x1200 even in crossfire?
i dont think your cpu would bottleneck crossfire 4870. if your on a budget then go for the 4870 but if your not then id get a 4890 (single) which then you can crossfire that later when you have the money. but 1 4890 would you great
[QUOTE=''Genetic1'']Ya, I'm kinda on a budget right now. I agree the 5870 is gonna be sweet, but I put myself on a strict budget for the next year, so I'm looking for a cheap alternitive for now. Would a 4870 512 crossfire give me a boost, or would the 512 still hamper me at 1900x1200 even in crossfire?[/QUOTE]alright didnt know that lol. otherwise yes go for crossfire that baby you will get a good performance boost
It depends on how long you plan on keeping the card(s). VRAM requirements for DX11 games will be higher if you still have a DX10 card. If you're going to keep the card(s) for atleast a year, then I would recommend selling the 4870 and getting a 4890.
i think you should get the new versions coming out. and get a better processor.
The 4890 is a very solid card, but two 4870's in Crossfire would likely just edge it out (keep in mind the 4890 is ATI's fastest single-GPU card). I'd say wait for the new 5800s, but if you really can't I'd have to agree with GeordiLaForge's opinion.
Ok, just found this..................http://www.guru3d.com/article/radeon-hd-4870-x2-review-crossfire/11According to this the 4870 512 crossfire kills a single 4870 512. On Mass Effect it equals a 4870x2 at 1900x1200. How could this be? It is encouraging, but is this for real?
[QUOTE=''Genetic1'']Ok, just found this..................http://www.guru3d.com/article/radeon-hd-4870-x2-review-crossfire/11According to this the 4870 512 crossfire kills a single 4870 512. On Mass Effect it equals a 4870x2 at 1900x1200. How could this be? It is encouraging, but is this for real?[/QUOTE]
Dual-GPU cards aren't as powerful as actually physically having two video cards based on the GPU the X2 card uses.
Simply, Dual-Video-Card pwns Dual-GPU.
with the 9.8 catalyst crossfire saw some great gains, so i say go for another 4870 to crossfire your rig. the 4890 is a great card but 4870 crossfire will get you better frames. but get a decent 4870, XFX, SAPPHIRE, MSI as long as its muchcheaper than the 4890 say at least $50.
So you are saying that 2 4870 512mb in crossfire will actually realistically compete with a 4870x2 at 1920x1200 resolution. Seriously two 512mb cards will gain me comparable performance to a 4870x2? Pardon my ignorance, but am I right in saying that I will still only have 512mb even in crossfire, and if this is right, then how can the fps increase be so dramatic when compared with a single 4870 512 in those benchmarks?
[QUOTE=''Genetic1'']So you are saying that 2 4870 512mb in crossfire will actually realistically compete with a 4870x2 at 1920x1200 resolution. Seriously two 512mb cards will gain me comparable performance to a 4870x2? Pardon my ignorance, but am I right in saying that I will still only have 512mb even in crossfire, and if this is right, then how can the fps increase be so dramatic when compared with a single 4870 512 in those benchmarks?[/QUOTE]yes the crossfire 4870 will compete with a 4870x2. in most cases 4870 crossfire1 mb beats 4870x2. the 512 mb is not far behind. the 4870x2 may get the better of the 512mb when AA is added though, but not much. crossfire works really well when compared to the x2 cards. crossfire works really good with 9.8 catalyst.
Thank-you everyone for your help. I appreciate it.
2 HD 4870 512MBs should be neck and neck with an HD 4870x2 1GB (512MB per GPU).
The HD 4870X2 2GB should outperform 2HD 4870 512MBs in memory intensive games
I have 2 HD 4870 512MBs in CrossfireX, it's awesome.
That is great news for me!!! The issue that I keep running into is that alot of people are saying that even though it's a crossfire I still only am utilizing 512mb, not 1024mb(1GB). So because of that crossfiring two 512mb cards using a 1920x 1200 display is a wate of time, but the benchmarks seem to dispute that theory completley. The benchmarks seem to indicate a huge leap in fps at 1920x1200 crossfiring 4870 512mb cards.I posted a link to one set of benchmarks, and I just found another......http://www.anandtech.com/video/showdoc.aspx?i=3517%26p=7 This shows a 92% increase crossfiring two 4870 512mb as opposed to using just one, and this is at 1920x1200(where crossfiring 512mb cards are not supposed to make a difference), but it dramatically does. It's weird, but freaking awesome!!!
[QUOTE=''Genetic1'']That is great news for me!!! The issue that I keep running into is that alot of people are saying that even though it's a crossfire I still only am utilizing 512mb, not 1024mb(1GB). So because of that crossfiring two 512mb cards using a 1920x 1200 display is a wate of time, but the benchmarks seem to dispute that theory completley. The benchmarks seem to indicate a huge leap in fps at 1920x1200 crossfiring 4870 512mb cards.I posted a link to one set of benchmarks, and I just found another......http://www.anandtech.com/video/showdoc.aspx?i=3517%26p=7 This shows a 92% increase crossfiring two 4870 512mb as opposed to using just one, and this is at 1920x1200(where crossfiring 512mb cards are not supposed to make a difference), but it dramatically does. It's weird, but freaking awesome!!![/QUOTE]
There are few games that even use more than 512MB of VRAM, the speed boost usually comes for there being larger chunks of memory being free so it doesn't have to jump around as much to write to memory. I have no problems playing any game with my 2 HD 4870 512MBs at 1920x1200, Crysis is even playable at 1920x1200 highest settings with good framerates. I would imagine it would help if enabled AA though, and maybe give me a few frames more, but nothing drastic. The speed boost comes from having the extra transistors, not really a memory limitation. GDDR5 has the most bandwidth of any VRAM on the market anyway, even more than the 512-bit GDDR3 Nvidia uses, so even if you do get maxed, it's plenty fast and can swap out fast to compensate. 2 HD 4870 512MBs are great, you won't regret it.
Thanks dude, I'm picking it up tommorow morning. Can't wait.
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