Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Any major difference between the GDDR3 and GDDR4 versions of HD 3870?

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

Forum Graphic & Displays : Graphics Cards - Any major difference between the GDDR3 and GDDR4 versions of HD 3870?

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mathiasschnell   06-01-2008 at 08:09:32 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?

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invisik   06-01-2008 at 09:14:46 PM
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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)

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mathiasschnell   06-01-2008 at 09:44:32 PM
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invisik wrote :

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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Dalyinx   06-01-2008 at 09:49:13 PM
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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.

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invisik   06-01-2008 at 10:28:17 PM
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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%

------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
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