Tuesday, April 28th 2009
Radeon HD 4770 Released, Industry's First 40 nm GPU
AMD today released the ATI Radeon HD 4770 graphics card. The release marks several milestones for the company, mainly winning the race for the first GPU to be built on the 40 nm process, and the introduction second-generation GDDR5 memory for the mainstream consumer segment.
The brains of this card is the 40 nm AMD RV740 GPU. Its specifications include 640 stream processors that churn out over 900 GFLOPs of shader compute power, 32 texture memory units, and 16 render back-ends. The GPU is aided by 512 MB of fast GDDR5 memory across a 128-bit wide interface. This provides the same amount of bandwidth as 256-bit GDDR3 commonly found in most graphics card in the range. The card is DirectX 10.1 compliant, and supports the ATI CrossFireX multi-GPU standard.
The card has been launched worldwide, with its initial US price set at $109, and an optional rebate that can send its price further down. In its range, it competes with NVIDIA GeForce 9800 GT, and AMD's own Radeon HD 4830. TechPowerUp is one of the first technology portals to publish a thorough review of the Radeon HD 4770. Our review can be read here.
The brains of this card is the 40 nm AMD RV740 GPU. Its specifications include 640 stream processors that churn out over 900 GFLOPs of shader compute power, 32 texture memory units, and 16 render back-ends. The GPU is aided by 512 MB of fast GDDR5 memory across a 128-bit wide interface. This provides the same amount of bandwidth as 256-bit GDDR3 commonly found in most graphics card in the range. The card is DirectX 10.1 compliant, and supports the ATI CrossFireX multi-GPU standard.
The card has been launched worldwide, with its initial US price set at $109, and an optional rebate that can send its price further down. In its range, it competes with NVIDIA GeForce 9800 GT, and AMD's own Radeon HD 4830. TechPowerUp is one of the first technology portals to publish a thorough review of the Radeon HD 4770. Our review can be read here.
38 Comments on Radeon HD 4770 Released, Industry's First 40 nm GPU
Good price too.
Then i read this one and i'm surprised by the huge difference in this aspect of the reviews. I mean: ~10 watts is one thing but there's a difference of 50 in idle and 49 under load.
Dunno if there's a difference between the card AMD sent for W1zzard to test and the card of the other review.
we'll soon have card only power measurements, waiting on a few last parts
The difference is just too big not to notice and it struck me as very odd: thanks for clearing that up.
EDIT: the numbers that HTC linked to are also for the whole system.
All in all, numbers that other sites are giving seem more like it. Especially if you take into account that the 4770 needs only one six pin power cable, while the 4850 needs two.
And thanks for the review, btw :)!
I think W1zzard's review has made it clear (at least to me) that the 4770 just doesn't cut it compared to the 4830.
Given the reviews thus far presented, i think it's early to say that.
Besides:I'll wait for this.
EDIT
Found a page that links to a bunch of reviews.
There are discrepancies with the power consumption in those as well: check AnandTech and HardwareCanucks, for example.
to the one who said they could measure "at the psu rails" - if someone had the capability to measure like that, they would just measure the card alone. every site who measures "whole system" power measures at the wall
I'm sure that you can OC the core clock even further to about 825-900 and memory clock to about 900-950, then you have a product that is in strong competition with other older 55nm cards. This is in direct competition with not only the 4830 like it says in the first post, but also with the 4850, which is supposed to be the best bargain for the buck. My 2 :D
I personally love just how small the stock 4770 seems to be, great for small cases.
4770 is listed 15w less consumption at idle compared to 4830, 23w less than 4850
4770 is listed 35w less consumption at 3D load compared to 4830, 60w less than 4850
I may just found my next pair of graphic cards (if I get around building a new rig).