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Any major difference between the GDDR3 and GDDR4 versions of HD 3870?

Last response: in Graphics & Displays
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June 1, 2008 6:09:32 PM

I had noticed recently that GDDR4 versions of the HD 3870 (and maybe the 3850 too, didn't really check) have been popping up. I'm guessing this was a silent release because I hadn't heard of it happening. Anywho, has anyone seen if the memory change makes a big difference in the performance? If so, where's the benchies?
a b U Graphics card
June 1, 2008 7:14:46 PM

yes it makes a difference the 3850 is similar in spec to the 3870 but the 3870 has gddr4. dont have any benchmarks but its just wat i no of my knowledge. (correct me if im wrong)
June 1, 2008 7:44:32 PM

invisik said:
yes it makes a difference the 3850 is similar in spec to the 3870 but the 3870 has gddr4. dont have any benchmarks but its just wat i no of my knowledge. (correct me if im wrong)


The 3870 comes with either GDDR3 or GDDR4. I'm asking if the memory makes a difference in the 3870s, and how big of one.
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June 1, 2008 7:49:13 PM

I believe the GDDR4 version is clocked about 200mhz faster than the GDDR3 on the memory, which makes it have a larger bandwidth, but I'm not entirely sure.

I'm guessing you would see a difference at higher resolutions, but don't quote me on that.
a b U Graphics card
June 1, 2008 8:28:17 PM

oh my bad. i believe that the memory will make a big difference.
bandwidth hungry games will run alot faster with gddr4. im assuming the difference will be about 10-15%
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