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1. #AMD RADEON HD 3870 VS R7 250 FULL#
2. #AMD RADEON HD 3870 VS R7 250 SOFTWARE#
3. #AMD RADEON HD 3870 VS R7 250 SERIES#

With the 7800 series completing the launch of Southern Islands, this gives AMD a consistent price structure for the entire family: $550, $450, $350, $250, $159, and $109.įinally, as far as availability goes this will be a delayed launch. The 7870 will have an MSRP of $350, while the 7850 will have an MSRP of $250. With AMD targeting the ~$320 570 and ~$210 560 Ti and given their conservative pricing on the rest of Southern Islands, it should come as no surprise that the 7800 series is priced equally conservatively. From a performance and price basis the 78 don’t map particularly well to any specific NVIDIA products, but generally speaking they’re targeted against the GTX 570 and GTX 560 Ti respectively. Having taken themselves out of competition with themselves, AMD’s only competition is NVIDIA’s lineup. As AMD began winding down Cayman (6900 series) almost immediately with the launch of the 7900 series, at this point the 6900 market has effectively dried up. Speaking of the 6970, let’s talk about the 7800 series’ competition. As we’ll see when we get to our benchmarks, this makes Pitcairn a surprisingly small chip given its 6970+ performance. Interestingly enough even though Barts was already a fairly small chip for its performance, Pitcairn takes this one step further with a die size of 212mm2, which in turn contains 2.8B transistors, only 160M more than Cayman. This includes not only power consumption, with one card being a sub-150W part, but also with regards to things such as CrossFire, where it features a single CF connector. The PowerTune limit is 150W with a typical board power of 130W, and the same 10W/3W idle power consumption as the 7870.Īltogether the 7800 series isn’t just the successor to the Barts based 6800 series in name but also the successor to the 6800 in design. As for the 7850 it’s the typical lower tier part, featuring 16 active CUs (1024 SPs), an 860MHz core clock, and the same 2GB of GDDR5 running at 4.8GHz as its counterpart, giving it roughly 68% the shading/texturing performance and 86% of the ROP & frontend performance of the 7870.

It has a PowerTune limit of 190W while AMD puts its typical board power draw closer to 175, meanwhile idle power consumption is around 10W with a long idle of 3W like the rest of Southern Islands.

#AMD RADEON HD 3870 VS R7 250 FULL#

The 7870 is a full Pitcairn, clocked at 1000MHz core and paired with 2GB of GDDR5 running at 4.8GHz.

#AMD RADEON HD 3870 VS R7 250 SOFTWARE#

FP64 support is once again present, and like Cape Verde it’s a performance-limited implementation for compatibility and software development purposes, with FP64 performance limited to 1/16 th FP32 performance.ĪMD’s Pitcairn cards will be the Radeon HD 7870 GHz Edition and the Radeon HD 7850. As with all Southern Islands family parts, Pitcairn supports things such as DX10+ SSAA, PowerTune, Fast HDMI support, partially resident textures, D3D 11.1 support, and the still-AWOL Video Codec Engine (VCE). On the functionality side of things, the Cape Verde comparisons continue.

Compared to Tahiti, Pitcairn still has 12 fewer CUs and as a result less shader and texturing performance along with the narrower memory bus, but it has the same number of ROPs and the same frontend as its bigger brother, which as we’ll see creates some very interesting situations. This works out to 1280 SPs among 20 CUs – organized as a doubling Cape Verde’s interesting 4/3/3 configuration – 80 texture units, 32 ROPs, 512KB L2 cache, and a 256-bit memory bus. Pitcairn has twice the number of CUs, twice the number of ROPs, twice the memory bandwidth, and of particular importance twice as many geometry engines on the frontend. So what exactly is Pitcairn? In a nutshell, take Cape Verde (7700) and double it, and you have Pitcairn. We’ve seen AMD capture the high-end with the 7900 series and struggle to control the mainstream market with the 7700 series, but how does the 7800 series fare amidst AMD’s lead in deploying 28nm GPUs? Let’s find out. The middle child of the family, it will be the basis of AMD’s $250+ enthusiast segment Radeon HD 7800 series. To that end today AMD is taking the wraps off the final piece of the Southern Islands puzzle: Pitcairn. Evergreen may have launched 4 chips in 6 months, but this month AMD will be completing the 3 chip Southern Islands launch in half the time – 3 chips in a mere 3 months. Now in 2012 AMD’s Southern Islands team is hard at work at wrapping up their own launch with new aspirations on quickness.

By previous standards this was a quick pace for a new design, especially since AMD had not previously attempted a 4 chip launch in such a manner. In 2009-2010, AMD launched the entire 4 chip Evergreen series in 6 months.