AMD Radeon "Big Navi" RX 5950 XT gets HBM2 and 2 TB / s bandwidth

With the architecture Radeon DNA (RDNA) and the graphics family “Navi”, AMD delivered much-needed competition in the middle class in 2019. However, AMD remained without a response to Nvidia’s graphics cards in the upper performance classes, something that the company’s CEO Lisa Su promises to address in 2020.

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1 Specifications: – AMD Radeon RX 5950 XT “Big Navi”

2 More about AMD Radeon “Navi”:[h][/h]

3 Related posts:

The long-awaited Radeon graphics card from AMD is called “Big Navi” and in addition to better performance, it is well-known about the specifications. Now publishing @CyberPunkCat on Twitter what is stated were specifications for the Radeon RX 5950 XT, which if true is reasonably just Big Navi.

The camera image of the fact sheet is stated to be provided by a source on SK Hynix, which is responsible for the graphics card’s memory. According to this, the graphics circuit has a wide memory bus of 4,096 bits accompanied by 24 GB HBM2E (now only called HBM2 / editor’s note), which should give a bandwidth of a record high 2,048 GB / s.

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Many have reacted to the data and the “uneven” amount of memory, something that can not be ruled out with HBM2. The technology stacks circuits on top of each other for increased capacity and in each capsule, in addition to traditionally even numbers such as 2, 4 and 8, it is possible to stack 3, 6 and 12 circuits. In the latter cases, the result is unorthodox capacities such as 3, 6 and 12 GB.

In terms of the graphics circuit itself, it goes under the code name D32310 / 15 and is said to have 5,120 stream processors and 320 texture units – twice as much as the Navi 10 in the Radeon RX 5700 XT. The number of raster units increases from 64 to 96, while the amount of L2 cache memory triples from 4 to 12 MB.

Specifications: – AMD Radeon RX 5950 XT “Big Navi”

	RX 5950 XT	RX 5700 XT	Radeon VII	RX Vega 64
Technical	7nm+ TSMC(?)	7nm TSMC	7nm TSMC	14nm Samsung
Circuit	“Big Navi”	Navi 10	Vega 20	Vega 10
Circuit surface	Big	251 mm²	331 mm²	484 mm²
Transistors	Many	10.3 billion	13.2 billion	12.5 billion
Architecture	RDNA 2(?)	RDNA	Vega	Vega
Streamproc.	5 120 st.	2 560 st.	3 840 st.	4 096 st.
Texture units	320 st.	160 st.	240 st.	256 st.
Raster units	96 st.	64 st.	64 st.	64 st.
Clock frequency	And	1 605 MHz	1 400 MHz	1 247 MHz
Playing frequency	And	1 755 MHz	–	–
Turbo frequency (max frequency)	And	1 905 MHz	1 750 MHz (1 800 MHz)	1 546 MHz (1 630 MHz)
Computational power	Guaranteed	9 754 GFLOPS	13 440 GFLOPS	12 665 GFLOPS
Memory bus	4 096-bit	256-bit	4 096-bit	2 048-bit
Memory amount	24 GB HBM2	8 GB GDDR6	16 GB HBM2	8 GB HBM2
Memory frequency	4 000 MHz	14 000 MHz	2 000 MHz	1 890 MHz
Memory bandwidth	2 TB / s	448 GB/s	1 TB / s	484 GB/s
Power supply	Oh yes	8+6-pin	8+8-pin	8+8-pin
Outputs	A number of	1 st. HDMI 2.0b 3 st. DP 1.4	1 st. HDMI 2.0b 3 st. DP 1.4	1 st. HDMI 2.0 3 st. DP 1.4
TBP	Many watts	225 W	300 W	295 W
Rec. Award	Big money	$399	$699	$499

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Provided that the information is correct, it is worth adding that the amount of memory will most likely not become a reality at the consumer level, but that this is a configuration intended for workstations and data centers. For consumers, it is more likely that the graphics card will be scaled down and get “only” 12 GB HBM2.

David_Wang-Next_Horizon_Gaming-Radeon_Architecture_06092019-19.jpg

The launch of the Big Navi is expected to take place later in the year and is then expected to take up the fight against Nvidia’s next generation graphics card in the Geforce RTX 3000 series, which takes the step down to 7 nanometers and gets a new architecture.