AMD Radeon R9 Fury X Review

Radeon 300 series



The R9 Fury X (codenamed 'Fiji XT') employs the GCN 1.2 architecture as the R9 380 but doubles the SPU count, which also amounts to 45% more SPUs than you'll find in the R9 390X.

the Fury X touts an incredible memory bandwidth of 512GB/s, which is 33% faster than that of the R9 390X and 60% higher than the R9 290X.

 That's a huge leap on what was already a fast memory subsystem using high-speed GDDR5 6Gbps memory.

 
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Radeon R9 Fury X	Radeon R9 390X	Radeon R9 390
Process	28nm	28nm	28nm
Stream Processors	4096	2816	2560
Core Clock	1050MHz	1050MHz	1000MHz
Compute Performance	8.6 TFLOPs	5.9 TFLOPs	5.1 TFLOPs
Texture Units	256	176	160
Texture Fill-Rate	268.8 GT/s	184.8 GT/s	160.0 GT/s
ROPs	64	64	64
Pixel Fill-Rate	67.2 GP/s	67.2 GP/s	64.0 GP/s
Z/Stencil	256	256	256
Memory Configuration	4GB HBM	8GB GDDR5	8GB GDDR5
Memory Interface	4096-bit	512-bit	512-bit
Memory Speed / Data Rate	500MHz / 1.0Gpbs	1500MHz / 6.0Gpbs	1500MHz / 6.0Gpbs
Memory Bandwidth	512GB/s	384GB/s	384GB/s
Power Connectors	2 x 8-pin	1 x 8-pin/6-pin	1 x 8-pin/6-pin
Typical Board Power	275 watt	275 watt	275 watt
PCIe Standard	PCIe 3.0	PCIe 3.0	PCIe 3.0
API Support	DirectX 12, Vulkan, Mantle	DirectX 12, Vulkan, Mantle	DirectX 12, Vulkan, Mantle
FreeSync Support	Yes	Yes	Yes
Virtual Super Resolutions	Yes	Yes	Yes
Frame Rate Targeting Control	Yes	Yes	Yes

Enabling this massive memory bandwidth is High Bandwidth Memory (HBM) memory, a new high-performance memory standard that uses vertically stacked DRAM dies and fast microscopic interconnects called through-silicon vias (TSVs). The three-dimensional die stacking and tiny interconnects allows for superior bandwidth at lesser power consumption than both GDDR5 and DDR4.

HBM is a superior technology to GDDR5 by almost every memory metric, offering more bandwidth while using less power and 19x less surface area than GDDR5.


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High Bandwidth Memory technology.HBM

HBM explained: Can stacked memory give AMD the edge it needs?

HBM brings a huge 1024-bit-wide bus with 512GB/sec on tap, plus lower power usage.

 HBM uses a form of 3D stacked memory

 A suitable replacement for the hard-working, but aging synchronous dynamic random-access memory (SDRAM) standard has been a long time coming.

 Essentially, each revision of SDRAM makes use of the same double data rate (DDR) principle as the original technology, which syncs memory to a system bus (allowing it to queue up one process while waiting for another), and also transfers data on both the rise and fall of the clock signal in order to work twice as fast.

How does HBM work?

 

 

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http://www.techspot.com/review/1024-and-radeon-r9-fury-x/