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Is it just me, or is the 4870 a waste of money?

post #1 of 19
Thread Starter 
I haven't studied it religiously as I'm sure some of you have, but it seems the only practical difference between the 50 and the 70 is the clock. 625 vs 750, and a variance on the mem.

Wouldn't one just buy an aftermarket cooler for a 4850 and save $70? Say, put a DuOrb on a 4850, comes out to $235.

I'm also wondering about this since there is some drama about the reliability of the 4870s.

Just some thoughts.
post #2 of 19
4870 has GDDR5 @ 3.6 which will do 4.4GHz after oc which is way ahead of 4850 and not all 4850 can do 750 core @ stock volts.
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post #3 of 19
screenshots, benchmarks and comparisons are needed.

I have these same curiosities about the 4850 and 4870's too. I don't want to waste money like i did on the $500 evga 8800gtx when they first came out. The 8800gts would have been fine for me.
    
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post #4 of 19
Um.... I see a huge difference in the 4870 and the 4850. For one the memory variance is huge. GDDR3 to GDDR5 is a big difference. GDDR3 is double pumped, so for example, 800mhz x 2 = 1600mhz. GDDR5 is quad pumped much like the Intel FSB on 775s. So for example, 800mhz x 4 = 3.2ghz. So thus stated, the effective bandwidth is that much more between the two models.

GDDR3 VS. GDDR5
Edited by bluedevil - 7/2/08 at 7:06am
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post #5 of 19
Memory bandwidth is the single largest difference. That you may potentially get more from the 4870 after overclocking is another. Reports are popping up now that under LC, the 4870's may eclipse 1GHz core.
    
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post #6 of 19
Thread Starter 
aha! That's what I needed, I didn't understand the clocks on the memory. So the 1800MHz listed is actually half it's true frequency?
post #7 of 19
The memory difference at the same clocks really isn't that significant to tell you the truth. There are benchmarks around that bench both cards at the same clocks (pretty similar scores).

See blow.
Edited by ignite - 7/2/08 at 7:13am
post #8 of 19
Quote:
Originally Posted by Cait Sith Cat View Post
aha! That's what I needed, I didn't understand the clocks on the memory. So the 1800MHz listed is actually half it's true frequency?
yup, thats actually 3600MHz effective
    
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post #9 of 19
http://en.expreview.com/2008/06/24/f...nd-hd-4850/22/
25% difference at stock is good enough for the extra $100,though it would be nicer if 4870 was a bit lower but since its almost as fast as a gtx260 i don't think it would drop in prices anymore.
    
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post #10 of 19
are they using the hotfixed drivers? Those scores seem kinda low.
    
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