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AMD's next generation flagship graphics card: gddr6? HBM?

via:驱动之家     time:2020/7/28 15:52:33     readed:171

Recently, there are more and more rumors about the next generation game cards of AMD and NVIDIA, but there are all kinds of statements, and some even conflict with each other.

AMD's new flagship card is based on rnda 2 architecture, and its core code name is big Navi, or Navi 21, or Sienna cichild.

The new card may be named the radon RX 6900 series. Of course, AMD will change the naming rules again. After all, the name of a card has become too frequent in recent years.

AMD下代旗舰显卡成谜:GDDR6?HBM?

The latest exposure scale, Big Navi graphics card will be matched with 2048- bit memory bit width (2

/* HBM Memory Channel Width */

#define UMC_V8_7_HBM_MEMORY_CHANNEL_WIDTH 128

/* number of umc channel instance with memory map register access */

#define UMC_V8_7_CHANNEL_INSTANCE_NUM 2

/* number of umc instance with memory map register access */

#define UMC_V8_7_UMC_INSTANCE_NUM 8

/* total channel instances in one umc block */

#define UMC_V8_7_TOTAL_CHANNEL_NUM (UMC_V8_7_CHANNEL_INSTANCE_NUM * UMC_V8_7_UMC_INSTANCE_NUM)

/* UMC regiser per channel offset */

#define UMC_V8_7_PER_CHANNEL_OFFSET_SIENNA 0x400

static void gmc_ v10_ 0_ set_ umc_ funcs(struct amdgpu_ device *adev)

{switch (adev-

case CHIP_ SIENNA_ CICHLID:

adev-

adev-

adev-

adev-

adev-

adev-

break;

default:

break;}}

On the other side of the code, the next generation of accelerated computing cards code Arcturus Radeon Instinct MI100 matched with 4096- bit memory bit width (4

/* HBM Memory Channel Width */

#define UMC_V6_1_HBM_MEMORY_CHANNEL_WIDTH 128

/* number of umc channel instance with memory map register access */

#define UMC_V6_1_CHANNEL_INSTANCE_NUM 4

/* number of umc instance with memory map register access */

#define UMC_V6_1_UMC_INSTANCE_NUM 8

/* total channel instances in one umc block */

#define UMC_V6_1_TOTAL_CHANNEL_NUM (UMC_V6_1_CHANNEL_INSTANCE_NUM * UMC_V6_1_UMC_INSTANCE_NUM)

/* UMC regiser per channel offset */

#define UMC_V6_1_PER_CHANNEL_OFFSET_VG20 0x800

#define UMC_V6_1_PER_CHANNEL_OFFSET_ARCT 0x400

So, does amd want to popularize HBM video memory on high-end cards? Not necessarily.

Some netizens said that the big Navi game card uses 16GB gddr6 video memory, corresponding to 512 bit width.

As a matter of fact, amd has not yet sent out the completed new PCB scheme of graphics card. Obviously, the final specification has not been determined. There are all kinds of possibilities.

Considering that the NVIDIA RTX 30 series has been basically locked up for release in September and is currently in the testing stage, amd big Navi is almost sure to come a step later.

AMD下代旗舰显卡成谜:GDDR6?HBM?

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