GRID P40-12Q vs Radeon HD 7990

G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

GRID P40-12Q vs Radeon HD 7990 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

GRID P40-12Q vs Radeon HD 7990: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

GRID P40-12Q

2015

Why buy it

✅33.3% more VRAM for high-resolution textures and newer games (4 GB vs 3 GB).
✅Draws 225W instead of 375W, a 150W reduction.
✅More future proof: Maxwell 2.0 (2014−2019) on 28nm with a newer platform for upcoming games.

Trade-offs

❌2015 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
470.5% HIGHER MSRP
$5,699 MSRPvs$999 MSRP
❌Lower G3D Mark per dollar, at 1.0 vs 5.6 G3D/$ ($5,699 MSRP vs $999 MSRP).

Radeon HD 7990

2013

Why buy it

✅Costs $4,700 less on MSRP ($999 MSRP vs $5,699 MSRP).
✅Delivers 473.1% more G3D Mark for each dollar spent, at 5.6 vs 1.0 G3D/$ ($999 MSRP vs $5,699 MSRP).

Trade-offs

❌Less VRAM, with 3 GB vs 4 GB for high-resolution textures and newer games.
❌2013 hardware with 3 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌66.7% higher power demand at 375W vs 225W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 7990 is the faster gaming card right now based on the synthetic data we have. It leads by 0.5% in PassMark G3D (5,566 vs 5,540), which is the best performance signal available in this matchup.

Which GPU is the safer long-term pick for 2026 and beyond?

GRID P40-12Q is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB vs 3 GB of VRAM and a newer 2015 generation instead of 2013. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Radeon HD 7990 makes the most sense to buy today. It is $4,700 cheaper on MSRP at $999 vs $5,699, and it leads G3D-per-dollar by 473.1% (5.6 vs 1.0), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon HD 7990 is the easier value choice. If you care more about 1080p and some 1440p headroom, GRID P40-12Q has the stronger long-term case.

GRID P40-12Q vs Radeon HD 7990 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GRID P40-12Q

The GRID P40-12Q is manufactured by NVIDIA. It was released in August 30 2015. It features the Maxwell 2.0 architecture. The core clock ranges from 557 MHz to 1178 MHz. It has 2048 shading units. The thermal design power (TDP) is 225W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,540 points.

Radeon HD 7990

The Radeon HD 7990 is manufactured by AMD. It was released in April 24 2013. It features the GCN 1.0 architecture. The core clock ranges from 950 MHz to 1000 MHz. It has 2048 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,566 points. Launch price was $999.

⚡

Graphics Performance

The GRID P40-12Q scores 5,540 and the Radeon HD 7990 reaches 5,566 in the G3D Mark benchmark — just a 0.5% difference, making them near-identical in rasterization performance. The GRID P40-12Q is built on Maxwell 2.0 while the Radeon HD 7990 uses GCN 1.0, both on a 28 nm process. Shader units: 2,048 (GRID P40-12Q) vs 2,048 (Radeon HD 7990). Raw compute: 4.825 TFLOPS (GRID P40-12Q) vs 4.096 TFLOPS ×2 (Radeon HD 7990). Boost clocks: 1178 MHz vs 1000 MHz.

Feature	GRID P40-12Q	Radeon HD 7990
G3D Mark Score	5,540	5,566
Architecture	Maxwell 2.0	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	2048	2048 ×2
Compute (TFLOPS)	4.825 TFLOPS+18%	4.096 TFLOPS ×2
Boost Clock	1178 MHz+18%	1000 MHz
ROPs	64+100%	32 ×2
TMUs	128	128 ×2
L1 Cache	768 KB+50%	512 KB
L2 Cache	2 MB+167%	0.75 MB

✨

Advanced Features (DLSS/FSR)

Feature	GRID P40-12Q	Radeon HD 7990
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

💾

Video Memory (VRAM)

The GRID P40-12Q has 4 GB of VRAM, while the Radeon HD 7990 carries 3 GB. GRID P40-12Q gives you 33.3% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GRID P40-12Q and 384-bit x2 on the Radeon HD 7990. L2 Cache: 2 MB (GRID P40-12Q) vs 0.75 MB (Radeon HD 7990) — the GRID P40-12Q has significantly larger on-die cache to reduce VRAM reliance.

Feature	GRID P40-12Q	Radeon HD 7990
VRAM Capacity	4 GB+33%	3 GB
Memory Type	GDDR6	GDDR5
Bus Width	128-bit	384-bit x2+200%
L2 Cache	2 MB+167%	0.75 MB

🔌

Power & Dimensions

The GRID P40-12Q draws 225W versus the Radeon HD 7990's 375W — a 50% difference. The GRID P40-12Q is more power-efficient. Recommended PSU: 350W (GRID P40-12Q) vs 750W (Radeon HD 7990). Power connectors: PCIe-powered vs 2x 8-pin.

Feature	GRID P40-12Q	Radeon HD 7990
TDP	225W-40%	375W
Recommended PSU	350W-53%	750W
Power Connector	PCIe-powered	2x 8-pin
Length	—	305mm
Height	—	111mm
Slots	—	2
Temp (Load)	—	85
Perf/Watt	24.6+66%	14.8

💰

Value Analysis

At launch, the GRID P40-12Q came in at $5699, while the Radeon HD 7990 launched at $999. On MSRP, Radeon HD 7990 was 82.5% cheaper ($4700 less). Performance per dollar on MSRP (G3D Mark / MSRP): 1.0 (GRID P40-12Q) vs 5.6 (Radeon HD 7990) — the Radeon HD 7990 offers 460% better value. The newer card here is GRID P40-12Q (2015 vs 2013).

Feature	GRID P40-12Q	Radeon HD 7990
MSRP	$5699	$999-82%
Performance per Dollar	1.0	5.6+460%
Codename	GM204	Malta
Release	August 30 2015	April 24 2013
Ranking	#433	#412

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