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First DDR4 GPU

T4C Fantasy

CPU & GPU DB Maintainer
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Just a question, why would they use DDR4 instead of GDDR5, is it for cost reasons?

Your question got me wondering. I don't have an answer but was surprised at these numbers:

"The next question is what GDDR5 costs. A recent DigiTimes report pegs GDDR5 at about $6.50 for an 8Gb module, though also shows pricing for August onward at $8.50 per module. With old pricing, that’s around $52 cost for an 8GB card, or $68 with new pricing. We do not presently know GDDR5X cost. This puts us at around 3x the cost for HBM2 which, even without factoring in yields or the large GPU die, shows why AMD’s margins are so thin on Vega. We also know that AMD is passing along its HBM2 cost to partners at roughly a 1:1 rate – they’re not upcharging it, which is what typically happens with GDDR. There’s no room to upcharge the HBM2 with Vega’s price target. "

https://www.gamersnexus.net/guides/3032-vega-56-cost-of-hbm2-and-necessity-to-use-it

More interesting is the read about HBM2 and the cost of that.
 
Just a question, why would they use DDR4 instead of GDDR5, is it for cost reasons?
that and maybe theres alot of it laying around since it wasnt widely adpoted?

edit: is it DDR4 like desktop ram or GDDR4?
 
its definitely not GDDR4, GDDR4 is way more expensive than DDR4 is, plus i dont think they make GDDR4 anymore.
if im correct in this
GDDR memory has better transfer rates but much worse latency
DDR memory is much cheaper
thnx for clarification... i read an article just now saying the same things you said as well
 
if anyone can get a pic of one and take it apart and take a chear pic of the die & substrate i will add to database. :D
I'm getting a new batch of broken Palit cards next month. If I get one of those - I'll post the PCB pics.
Looks really weird on paper, though... DDR4...
 
its definitely not GDDR4, GDDR4 is way more expensive than DDR4 is, plus i dont think they make GDDR4 anymore.
if im correct in this
GDDR memory has better transfer rates but much worse latency
DDR memory is much cheaper
Yeah GDDR4 was short lived and just a wonky design, so it got skipped for most part
 
Yeah GDDR4 was short lived and just a wonky design, so it got skipped for most part
yeah didn't the GTX200 series with GDDR3 still beat it? lol
 
yeah didn't the GTX200 series with GDDR3 still beat it? lol

Yup, hence it being scrapped, iirc the HD 2900 series and 3800 series AMD GPUs used it.
 
Yup, hence it being scrapped, iirc the HD 2900 series and 3800 series AMD GPUs used it.
HD 2900 XTX
ATi Radeon HD 2900 XTX 1024MB GDDR4 512Bit Rev_A1 0704 Prototype top (1).JPG

ATi Radeon HD 2900 XTX PCI-E 512MB 512Bit GDDR3 Rev_A0 0639 Engineering Sample top (1).JPG
 
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Now just waiting for someone to take clear pics of the gp108-310 chip
 
Yup, hence it being scrapped, iirc the HD 2900 series and 3800 series AMD GPUs used it.
X1950XTX, HD 2600 XT, HD 2900 Pro, HD 2900 XT, HD 3870. Not very widely adopted. :D
 
This chip?gp108-310- A-1

c808_GP108-310-A1.jpg
thats my placeholder, i photoshopped what it looks like, but im not satisfied until i get the real chip and work on it
 
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