XFX Radeon RX 6800 XT Speedster MERC 319 vs AMD Radeon RX 7900 GRE Full Specs

Summary

4,608 Shaders 2.25GHz	5,120 Shaders 2.25GHz
16GB GDDR6512GB/s	16GB GDDR6576GB/s
Peak·FP32·FP16 20.74 TFLOPS	Peak·FP32·FP16 45.98 TFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 300W	TDP 260W
Power Connectors 2x 8-Pin	Power Connectors 2x 8-Pin

Highlights

Peak OPS

Peak OPS FP32 FP16 Tensor FP16-16 Tensor FP16-32 FP64 BF16 Tensor BF16 Tensor INT8 Tensor INT4 Memory Bandwidth TDP

Radeon RX 6800 XT Speedster MERC 31941.47 TFLOPSFP16

x1

Radeon RX 7900 GRE183.9 TOPSINT4 Tensor

x4.43

Show Top Score

Theoretical Performance

Clock Speed2250MHz UC·Base·Boost·OC	Clock Speed2245MHz UC·Base·Boost·OC
Peak OPS 41.47 TFLOPSFP16	Peak OPS 183.9 TOPSINT4 Tensor
-	Tensor FP16-16 45.98 TFLOPS Tensor FP16-32 45.98 TFLOPS
-	BF16 91.96 TFLOPS Tensor BF16 45.98 TFLOPS
FP32 20.74 TFLOPS	FP32 45.98 TFLOPS
FP64 1.3 TFLOPS	FP64 1.44 TFLOPS
Tensor INT4 -	Tensor INT4 183.9 TOPS
-	Tensor INT8 45.98 TOPS
Pixel Rate 288 GPixel/s	Pixel Rate 359.2 GPixel/s
Texture Rate 648 GTexel/s	Texture Rate 718.4 GTexel/s

Core Config

Shaders 4,608 Shaders	Shaders 5,120 Shaders
TMUs 288 TMUs	TMUs 320 TMUs
ROPs 128 ROPs	ROPs 160 ROPs
Tensor Cores -	Tensor Cores 160 T-Cores
RT Cores 72 RT-Cores	RT Cores 80 RT-Cores
CUs 72 CUs	CUs 80 CUs

Clocks

Base Clock 1.82GHz	Base Clock 1.88GHz
Boost Clock 2.25GHz	Boost Clock 2.25GHz

Cache

L2 Cache 4.1MB shared	L2 Cache 6.1MB shared
L3 Cache 128MB shared	L3 Cache 64MB shared
L3 Bandwidth 1.66TB/s	L3 Bandwidth 2.25TB/s

Memory

16GB GDDR6	16GB GDDR6
Memory Bus 256-bit	Memory Bus 256-bit
Memory Speed 16GT/s	Memory Speed 18GT/s
Memory Bandwidth 512GB/s	Memory Bandwidth 576GB/s

Power & Thermals

TDP 300W	TDP 260W
Max Temp 110°C Max	Max Temp -

Video Output

Multi-Monitor 4	Multi-Monitor 3
HDCP HDCP 2.3	HDCP HDCP 2.3

Ports

-	2x DisplayPort 2.1
3x DisplayPort 1.4	-
1x HDMI 2.1	1x HDMI 2.1
-	1x USB-C

Encoder

Encoder Model VCN 3.0

Encoder Model VCN 4.0

Decoder

Decoder Model VCN 3.0

Decoder Model VCN 4.0

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 2.7-Slots	PCIe 2.5-Slots
Height 138 mm (5.43") Width 340 mm (13.39") Depth 54 mm (2.13")	Height 110 mm (4.33") Width 276 mm (10.87") Depth 51 mm (2.01")
Cooling Open-Air 3x Fans	Cooling Open-Air 3x Fans
Power Connectors 2x 8-Pin	Power Connectors 2x 8-Pin

Chip

Manufacturer XFX	Manufacturer AMD
Chip Designer AMD	Chip Designer AMD
Architecture RDNA 2	Architecture RDNA 3
Family Radeon RX 6000	Family Radeon RX 7000
Branding	Branding
Codename Sienna Cichlid	Codename Plum Bonito
Chip Variant Navi 21 XL	Chip Variant Navi 31 XL
Market Segment Desktop	Market Segment Desktop
Release Date Nov 18, 2020	Release Date Jul 27, 2023

Fabrication

Foundry TSMC	Foundry TSMC
Other Foundries -	Other Foundries TSMCMCD
Fabrication Node N7 -	Fabrication Node N5 N6MCD
Die Size 520mm² -	Die Size 304mm² 150mm²MCD
Transistor Count 26.8 Billion -	Transistor Count 45.4 Billion 8.2 BillionMCD
Transistor Density 51.56 MTr/mm² -	Transistor Density 149.2 MTr/mm² 54.67 MTr/mm²MCD

Images

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Competitors

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